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FITS template examples
Data at the HEASARC use standard FITS format and keywords to ensure the interoperablity and multi-mission approach. Templates of FITS header examples for the different FITS data format are listed below. All the templates, other than images, use the FITS bintable extension layout where data are listed in single element columns and/or an array. The FITS conventions and specific formats are described in the FITS data format dedicated pages. In most cases, the FITS primary header does not contain data, but does contains a subset of informative keywords. FITS images use either the primary header or the IMAGE FITS extension.
Event formatThe Event format uses the FITS bintable where each row records properties associated to a single event detected. The Event format includes a mandatory good time interval extension The event properties may include the spectral characteristic as well as positions in different coordinates. This format is used for different level of data processing.Two examples for event formats one with coordinates and one without coordinates Event with coordinates=== XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 32 / width of table in bytes NAXIS2 = 713 / Number of events PCOUNT = 0 / size of special data area: GCOUNT = 1 / one data group (required keyword) TFIELDS = 11 / number of fields in each row TTYPE1 = 'TIME ' / Time of events TFORM1 = '1D ' / data format of field TUNIT1 = 's ' / physical unit of field TTYPE2 = 'X ' / Event X position Sky coordinates TFORM2 = '1I ' / data format of field TUNIT2 = 'pixel ' / physical unit of field TLMIN2 = 1 / Minimum value for X column TLMAX2 = 1000 / Maximum value for X column TCRPX2 = 5.0050000000000E+02 / X image reference pixel TCRVL2 = 1.7001400000000E+02 / X image reference pixel coordinate (deg) TCDLT2 = -6.5480890000000E-04 / X image scale (deg/pixel) TCTYP2 = 'RA---TAN' / X coordinate type TCUNI2 = 'deg ' / X units TNULL2 = -1 / X null value TTYPE3 = 'Y ' / Event Y position Sky coordinates TFORM3 = '1I ' / data format of field TUNIT3 = 'pixel ' / physical unit of field TLMIN3 = 1 / Minimum value for Y column TLMAX3 = 1000 / Maximum value for Y column TCRPX3 = 5.0050000000000E+02 / Y image reference pixel TCRVL3 = 5.5990910000000E+01 / Y image reference pixel coordinate (deg) TCDLT3 = 6.5480890000000E-04 / Y image scale (deg/pixel) TCTYP3 = 'DEC--TAN' / Y coordinate type TCUNI3 = 'deg ' / Y units TNULL3 = -1 / Y null value TTYPE4 = 'RAWX ' / Event X position RAW coordinates TFORM4 = '1I ' / data format of field TUNIT4 = 'pixel ' / physical unit of field TLMIN4 = 0 / minimum legal value in the column TLMAX4 = 599 / maximum legal value in the column TCTYP4 = 'RAWX ' / WCS axis type TCRVL4 = 2.9950000000000E+02 / WCS reference value TCDLT4 = 1 / WCS coordinate increment TCRPX4 = 3.0050000000000E+02 / WCS Reference point TTYPE5 = 'RAWY ' / Event Y position RAW coordinates TFORM5 = '1I ' / data format of field TUNIT5 = 'pixel ' / physical unit of field TLMIN5 = 0 / minimum legal value in the column TLMAX5 = 599 / maximum legal value in the column TCTYP5 = 'RAWY ' / WCS axis type TCRVL5 = 2.9950000000000E+02 / WCS reference value TCDLT5 = 1 / WCS coordinate increment TCRPX5 = 3.0050000000000E+02 / WCS Reference point TTYPE6 = 'DETX ' / Event X position DET coordinates TFORM6 = '1I ' / data format of field TUNIT6 = 'pixel ' / physical unit of field TLMIN6 = 1 / Minimum value for DETX column TLMAX6 = 600 / Maximum value for DETX column TCRPX6 = 3.0050000000000E+02 / DETX image reference pixel TCRVL6 = 0.0000000000000E+00 / DETX image reference pixel coordinate (mm) TCDLT6 = 4.0000000000000E-02 / DETX image scale (mm/pixel) TCTYP6 = 'DETX ' / DETX coordinate type TCUNI6 = 'mm ' / DETX units TTYPE7 = 'DETY ' / Event Y position DET coordinates TFORM7 = '1I ' / data format of field TUNIT7 = 'pixel ' / physical unit of field TLMIN7 = 1 / Minimum value for DETY column TLMAX7 = 600 / Maximum value for DETY column TCRPX7 = 3.0050000000000E+02 / DETY image reference pixel TCRVL7 = 0.0000000000000E+00 / DETY image reference pixel coordinate (mm) TCDLT7 = 4.0000000000000E-02 / DETY image scale (mm/pixel) TCTYP7 = 'DETY ' / DETY coordinate type TCUNI7 = 'mm ' / DETY units TTYPE8 = 'PHA ' / Pulse Height Analyzer after event recognition TFORM8 = '1J ' / data format of field TUNIT8 = 'chan ' / physical unit of field TLMIN8 = 0 / minimum legal value in the column TLMAX8 = 4095 / maximum legal value in the column TTYPE9 = 'PI ' / Pulse invariant TFORM9 = '1J ' / data format of field TUNIT9 = 'chan ' / physical unit of field TLMIN9 = 0 / minimum legal value in the column TLMAX9 = 1023 / max value for this column TNULL9 = -4095 / Illegal value for this column TTYPE10 = 'GRADE ' / Event Grade TFORM10 = '1I ' / data format of field TLMIN10 = 0 / min value for this column TLMAX10 = 32 / max value for this column TTYPE11 = 'STATUS ' / Event Quality Flag TFORM11 = '16X ' / data format of field EXTNAME = 'EVENTS ' / Name HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'EVENTS ' / Event extension TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name DATAMODE= 'PHOTON ' / Datamode OBS_ID = '00685124002' / Observation ID TARG_ID = 685124 / Target ID SEG_NUM = 2 / Segment number OBJECT = 'GRB160504a' / Object name TIMESYS = 'TT ' / time measured from MJDREFI = 51910 / MJD reference day MJDREFF = 7.428703700000000E-04 / MJD reference (fraction of day) TIMEREF = 'LOCAL ' / reference time TASSIGN = 'SATELLITE' / Time assigned by clock TIMEUNIT= 's ' / unit for time keywords TIERRELA= 1.0E-8 / [s/s] relative errors expressed as rate TIERABSO= 1.0 / [s] timing precision in seconds TSTART = 4.841858007774234E+08 / time start TSTOP = 4.842434237911034E+08 / time stop DATE-OBS= '2016-05-06T00:03:16' / Start date of observations DATE-END= '2016-05-06T16:03:54' / End date of observations CLOCKAPP= F / default TELAPSE = 5.762301368004084E+04 / elapsed time ONTIME = 2.033420300126076E+03 / On-source time LIVETIME= 2.025340415817028E+03 / Deadtime corrected on-source time EXPOSURE= 2.025340415817028E+03 / Exposure time DEADC = 9.96026456E-01 / Deadtime correction TIMEPIXR= 0.0000000000000E+00 / Bin time beginning=0 middle=0.5 end=1 TIMEDEL = 2.5073000000000E+00 / Data time resolution DEADAPP = F / Has DEADC been applied to data MJD-OBS = 5.751400306668314E+04 / MJD of data start time TIMEZERO= 0.000000000000000E+00 / Time Zero EQUINOX = 2.000E+03 / Equinox of celestial coord system RADECSYS= 'FK5 ' / celestial coord system RA_NOM = 1.7001400000000E+02 / R. A. of nominal aspect point DEC_NOM = 5.5990910000000E+01 / Dec. of nominal aspect point RA_OBJ = 170.0723750 / [deg] R.A. Object DEC_OBJ = 56.0012778 / [deg] Dec Object RA_PNT = 170.013982938331 / [deg] RA pointing DEC_PNT = 55.9909115956101 / [deg] Dec pointing PA_PNT = 317.260948389031 / [deg] Position angle (roll) OBS_MODE= 'POINTING' / default ORIGIN = 'NASA/GSFC' / origin of fits file CREATOR = 'extractor v5.24' / Extractor TLM2FITS= 'V6.4 ' / Telemetry converter version number MTYPE1 = 'SKY ' / DM Keyword: Descriptor name MFORM1 = 'X, Y ' / [pixel] MTYPE2 = 'DET ' / DM Keyword: Descriptor name MFORM2 = 'DETX, DETY' / [mm] MTYPE3 = 'RAW ' / DM Keyword: Descriptor name MFORM3 = 'RAWX, RAWY' / [pixel] DSTYP1 = 'GRADE ' / Data subspace descriptor: name DSFORM1 = 'I ' / Data subspace descriptor: datatype DSVAL1 = '0:12 ' / Data subspace descriptor: value NPIXSOU = 1.0000000000E+06 / Number of pixels in selected region PROCVER = '3.17.03 ' / Processing script version SOFTVER = 'Hea_27Jul2015_V6.17_Swift_Rel4.5(Bld34)_27Jul2015_SDCpatch_1' CALDBVER= 'b20090130_u20111031_x20150721_m20160311' / CALDB index versions used SEQPNUM = 14 / Number of times the dataset processed DATE = '2016-05-16T09:43:04' / file creation date (YYYY-MM-DDThh:mm:ss UT) CHECKSUM= 'cTSfcRQZcRQdcRQZ' / HDU checksum updated 2016-05-16T09:48:58 DATASUM = '3624930297' / data unit checksum updated 2016-05-16T09:48:58 Note: Additinal instrument specific keywords, HISTORY and COMMENT have been removed === Event without coordinates=== XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / array data type NAXIS = 2 / number of array dimensions NAXIS1 = 12 / length of dimension 1 NAXIS2 = 8485 / length of dimension 2 PCOUNT = 0 / number of group parameters GCOUNT = 1 / number of groups TFIELDS = 3 / number of table fields TTYPE1 = 'TIME ' / Time of event TFORM1 = '1D ' / data format of field TUNIT1 = 's ' / physical unit of field TTYPE2 = 'PHA ' / Pulse Height Analyzer TFORM2 = '1I ' / data format of field TUNIT2 = 'chan ' / physical unit of field TLMIN2 = 600 / minimum legal value of column TLMAX2 = 12900 / maximum legal value of the column TTYPE3 = 'PI ' / Pulse Invariant TFORM3 = '1I ' / data format of field TUNIT3 = 'chan ' / physical unit of field TLMIN3 = 1 / minimum legal value of the column TLMAX3 = 455 / maximum legal value of the column TNULL3 = -1 PI2ENE = 0.02 / PI conversion from chan to energy keV EXTNAME = 'EVENTS ' / Binary table extension name HDUCLASS= 'OGIP ' / format conforms to OGIP/GSFC standards HDUCLAS1= 'EVENTS ' / First class level HDUCLAS2= 'ACCEPTED' / Second Class level TELESCOP= 'HALOSAT ' / Telescope (mission) name INSTRUME= 'SDD38 ' / Instrument name DATAMODE= 'PHOTON ' / Instrument datamode OBSERVER= 'PHILIP KAARET' / Principal Investigator OBS_ID = '011901 ' / Observation ID OBJECT = 'HaloSat J0310-6100' / Object/Target Name OBJTYPE = 'HALO ' / Object/Target type EQUINOX = 2000 / [yr] Equinox of celestial coord system RADECSYS= 'FK5 ' / Celestial coord system RA_NOM = 47.5 / [deg] R.A. of nominal aspect point [J2000] DEC_NOM = -61.0 / [deg] Dec. of nominal aspect point [J2000] RA_OBJ = 47.5 / [deg] Object Right ascension [J2000] DEC_OBJ = -61.0 / [deg] Object Declination [J2000] TIMESYS = 'TT ' / Reference Time System MJDREFI = 51544 / [d] MJD reference day (2000-01-01T00:00:00) MJDREFF = 0.00074287037037037 / [d] MJD reference (fraction of day) TIMEREF = 'LOCAL ' / Reference Frame TASSIGN = 'SATELLITE' / Time assigned by clock TIMEUNIT= 's ' / Time unit for timing header keyword TIMEDEL = 0.05 / [s] Data time resolution. TIMEZERO= 0.0 / [s] Time Zero TIMEPIXR= 1 / Bin time beginning=1 middle=0.5 end=1 TIERRELA= 4E-06 / [s/s] relative errors expressed as rate TIERABSO= 1.0 / [s] timing precision in seconds TSTART = 619301644.0 / [s] Observation start time TSTOP = 654717790.0 / [s] Observation stop time TELAPSE = 35416146.0 / [s] Stop - Start ONTIME = 37697.0 / [s] Observation time on target EXPOSURE= 37697.0 / [s] Exposure DATE-OBS= '2019-08-16T20:13:27' / Start date of observations DATE-END= '2020-09-29T18:02:33' / End date of observations CLOCKAPP= T / Clock correction applied? (F/T) DEADAPP = F / Has deadtime been applied to data? (F/T) ORIGIN = 'UNIVERSITY OF IOWA' / Origin of fits file PROCVER = 'hsuf_20200226_hscl_20200222' / Processing script version number SOFTVER = 'Hea_26jun2019_V6.26.1' / Software version CALDBVER= 'hs20200129' / CALDB index version used TLM2FITS= 'db_20200218' / Telemetry converter FITS number CREATOR = 'db_hsuf_hscl' / Software creator of the file DATE = '2021-02-09T17:25:25' / File creation date CHECKSUM= '9SATCQ0R9Q7RCQ7R' / HDU checksum updated 2021-02-09T23:59:08 DATASUM = '209839422' / data unit checksum updated 2021-02-09T23:59:08 END === Good time intervalsThe Good Time Interval extension defines at the good intervals for a specific characteristic of the experiment. It is always included as an extension of the Event format.=== XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 16 / width of table in bytes NAXIS2 = 0 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 2 / number of fields in each row TTYPE1 = 'START ' / label for field 1 TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'STOP ' / label for field 2 TFORM2 = '1D ' / data format of field: 8-byte DOUBLE TUNIT2 = 's ' / physical unit of field EXTNAME = 'STDGTI ' / name of this binary table extension HDUCLASS= 'OGIP ' / File conforms to OGIP/GSFC conventions HDUCLAS1= 'GTI ' / File contains Good Time Intervals HDUCLAS2= 'STANDARD' / File contains Good Time Intervals TELESCOP= 'MAXI ' / Telescope (mission) name DATAMODE= '32BIT ' / Datamode INSTRUME= 'GSC ' / Instrument name OBJECT = 'All-Sky ' / Name of observed object ONTIME = 0.000000000000000E+00 / On-source time EXPOSURE= 0.000000000000000E+00 / Exposure time LIVETIME= 0.000000000000000E+00 / On-source time DATE-OBS= '2009-08-04' / Start date of observations TIME-OBS= '04:25:28' / Start time of observations DATE-END= '2009-08-04' / End date of observations TIME-END= '23:27:41' / End time of observations TSTART = 3.026751307849534E+08 / time start TSTOP = 3.027436637266955E+08 / time stop TELAPSE = 6.853294174218178E+04 / elapsed time MJD-OBS = 5.504718512695548E+04 / MJD of data start time MJDREFI = 51544 / MJD reference day MJDREFF = 7.428703703703700E-04 / MJD reference (fraction of day) TIMEREF = 'LOCAL ' / reference time TIMESYS = 'TT ' / time measured from TIMEUNIT= 's ' / unit for time keywords EQUINOX = 2.000E+03 / Equinox of celestial coord system RADECSYS= 'FK5 ' / celestial coord system USER = 'eiji-h ' / User name of creator FILIN001= 'gsc6_work1001.xsl' / Input file name CREATOR = 'extractor v5.23' / Extractor DATE = '2015-03-30T07:23:29' / file creation date (YYYY-MM-DDThh:mm:ss UT) ORIGIN = 'NASA/GSFC' / origin of fits file HDUNAME = 'STDGTI ' / ASCDM block name MTYPE1 = 'TIME ' / Data type MFORM1 = 'START,STOP' / names of the start and stop columns METYP1 = 'R ' / data descriptor type: Range, binned data CHECKSUM= 'Za7EfY6EZa6EdW6E' / HDU checksum updated 2015-03-30T07:23:29 DATASUM = ' 0' / data unit checksum updated 2015-03-30T07:23:29 END === Science Array dataThe Science array data format is used when the experiment records an array of a specific quantity collected within an exposure. The format data uses the FITS bintable where each row has one or more columns reconding an array of data either a spectrum, counts in different energy bands or with count collected with fine time resolution. The example here is for counts collected every 0.125 sec in 4 different energy band and stored in the column COUNTS.=== XTENSION= 'BINTABLE' / type of extension BITPIX = 8 / number of bits per data element NAXIS = 2 / number of data axes NAXIS1 = 29 / width of table in bytes NAXIS2 = 689832 / number of rows in table PCOUNT = 0 / length of reserved area and heap GCOUNT = 1 / number of groups TFIELDS = 5 / number of fields in each row EXTNAME = 'CGBM_TH ' / name of this HDU TTYPE1 = 'TIME ' / Seconds since MJDREF; end times of bins TFORM1 = 'D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'MDCTIME ' / Mission Data Controller time; end times of bins TFORM2 = 'D ' / data format of field: 8-byte DOUBLE TUNIT2 = 's ' / physical unit of field TTYPE3 = 'COUNTS ' / Detected counts in 4 channels TFORM3 = '4I ' / data format of field: 2-byte INTEGER TUNIT3 = 'count ' / physical unit of field TZERO3 = 32768 / offset for column TTYPE4 = 'EXPOSURE' / Exposure time (dead-time corrected) TFORM4 = 'E ' / data format of field: 4-byte REAL TUNIT4 = 's ' / physical unit of field TTYPE5 = 'SEQNUM ' / Bin sequence number within 1 sec (0-7) TFORM5 = 'B ' / data format of field: BYTE 1CUNI3 = 'chan ' / Unit of the pixel along the CTYP axes 1CTYP3 = 'CHANNEL ' / CTYP axis name TELESCOP= 'CALET ' / Mission name INSTRUME= 'CGBM ' / Instrument name DETNAM = 'HXM1 ' / Detector name DATAMODE= 'TH_LOW ' / Data mode GAIN = 'LOW ' / Gain DETCHANS= 4 / Number of detector channels OBS_ID = '20160417' / Observation ID MJDREFI = 51544 / MJD reference day; 01 Jan 2000 00:00:00 UTC MJDREFF = 0.00074287037037037 / MJD reference(fraction of day) TIMEREF = 'LOCAL ' / Time is in the satellite frame TASSIGN = 'SATELLITE' / Time assigned on satellite TIMESYS = 'TT ' / Time system is Terrestrial Time TIMEUNIT= 's ' / unit for time keyword TIMEPIXR= 1 / Time stamps refer to end of each bin CLOCKAPP= T / Is clock correction applied DATE-OBS= '2016-04-16T23:59:59' / Observation start datetime (UTC) DATE-END= '2016-04-18T00:00:00' / Observation end datetime (UTC) TSTART = 514166403.006565 / Observation start time (MET) TSTOP = 514252803.94528 / Observation stop time (MET) TIMEDEL = 0.125 / Time resolution (bin size) TELAPSE = 86400.938715 / TSTOP - TSTART DEADAPP = T / Is dead-time correction applied HDUCLASS= 'OGIP ' / format conforms to OGIP standard HDUCLAS1= 'ARRAY ' / Array of binned data HDUCLAS2= 'TOTAL ' / Total counts ORIGIN = 'JAXA, WCOC' / Origin of FITS file CREATOR = 'cgbmgenth 0.3.2 (2019-03-18)' / Software name-version-date PROCVER = '3.0.3.1 ' / Major.Minor.Tool.CALDB CALDBVER= 'cgbm20180214' / CALDB version SEQPNUM = 1 / sequence in procver L3CORR = T / Is L3 correction applied DATE = '2016-04-17T00:00:00.000' / File creation datetime (UTC) CHECKSUM= '9HdDEFb99FbACFb9' / HDU checksum updated 2020-11-10T20:53:39 DATASUM = '2100311838' / data unit checksum updated 2020-11-10T20:53:39 END === OrbitThe satellite orbit format uses a FITS bintable where position (X,Y,Z) and velocity (Vx, Vy, Vz) are listed in rows as function of time. Other columns may be present.=== XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 81 / width of table in bytes NAXIS2 = 113 / Number of events PCOUNT = 0 / size of special data area: GCOUNT = 1 / one data group (required keyword) TFIELDS = 11 / number of fields in each row EXTNAME = 'ORBIT ' / name of this binary table extension HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'TEMPORALDATA' / Contains temporal data HDUCLAS2= 'EPHEM ' / Contains orbit ephemeris data DATE = '2019-02-26T20:23:35' / file creation date (YYYY-MM-DDThh:mm:ss UT) TIMEPIXR= 0.0000000000000E+00 / Bin time beginning=0 middle=0.5 end=1 TIMEZERO= 0.00000000000000E+00 / Time Zero NICERORB= 'GEONS ' / Source of data: GEONS filter TTYPE1 = 'TIME ' / Time of events TFORM1 = '1D ' / data format of field TUNIT1 = 's ' / physical unit of field TDISP1 = 'F20.9 ' / display format of field TTYPE2 = 'X ' / Orbit X position (J2000 ECI) TFORM2 = '1D ' / data format of field TUNIT2 = 'm ' / physical unit of field TDISP2 = 'F10.3 ' / display format of field TTYPE3 = 'Y ' / Orbit Y position (J2000 ECI) TFORM3 = '1D ' / data format of field TUNIT3 = 'm ' / physical unit of field TDISP3 = 'F10.3 ' / display format of field TTYPE4 = 'Z ' / Orbit Z position (J2000 ECI) TFORM4 = '1D ' / data format of field TUNIT4 = 'm ' / physical unit of field TDISP4 = 'F10.3 ' / display format of field TTYPE5 = 'Vx ' / Orbit X velocity (J2000 ECI) TFORM5 = '1D ' / data format of field TUNIT5 = 'm/s ' / physical unit of field TDISP5 = 'F10.3 ' / display format of field TTYPE6 = 'Vy ' / Orbit Y velocity (J2000 ECI) TFORM6 = '1D ' / data format of field TUNIT6 = 'm/s ' / physical unit of field TTYPE7 = 'Vz ' / Orbit Z velocity (J2000 ECI) TFORM7 = '1D ' / data format of field TUNIT7 = 'm/s ' / physical unit of field TTYPE8 = 'GEONS_J2K_TIME_RAW0'/ GEONS GPS epoch of state since start of GPS wee TFORM8 = '1D ' / format of field TUNIT8 = 's ' / physical unit of field TTYPE9 = 'GEONS_J2K_WEEK0' / GEONS GPS week number of state TFORM9 = '1D ' / format of field TUNIT9 = 'week ' / physical unit of field TDISP9 = 'F6.1 ' / display format of field TTYPE10 = 'ORIG_TIME' / original APID 0301 timestamp TFORM10 = '1D ' / format of field TUNIT10 = 's ' / physical unit of field TTYPE11 = 'QUALITY' / GEONS state time validity TFORM11 = '1B ' / format of field COMMENT QUALITY is the GEONS validity state flag: 0=VALID,1=INVALID COMMENT $Id: 2950779783ee1416ca94c1fe3aaa08fd185f5e10 $ TELESCOP= 'NICER ' / Telescope (mission) name INSTRUME= 'XTI ' / Instrument name TARG_ID = 500 / NICER target catalog ID number OBSERVER= 'GENDREAU, KEITH C.' / Observer or Principal Investigator TITLE = 'CALIBRATION BACKGROUND' / Science program title OBS_ID = '1012010193' / Observation ID ORIGIN = 'NASA/GSFC' / origin of fits file CREATOR = 'nicerorb2fits $Id: ff050ce45ef576987deade9d461e04113c3b44b3 $' / Crea TLM2FITS= 'NICER2FITSv1.24_FSWv20170404a' / Telemetry converter version number PROCVER = 'l0-master_20181010' / Processing script version number SOFTVER = 'Hea_22Oct2018_V6.25_NICER_2018-11-19_V005a' / HEASoft software versio CALDBVER= 'xti20181105' / CALDB index versions used SEQPNUM = 3 / Number of times the dataset processed CHECKSUM= 'VaPTYVMTVZMTVZMT' / HDU checksum updated 2019-02-26T20:23:57 DATASUM = '2543599558' / data unit checksum updated 2019-02-26T20:23:57 OBJECT = 'BKGD_RXTE_1' / Object/target name DATE-OBS= '2019-02-20T16:49:31' / Start date of observations DATE-END= '2019-02-20T18:31:20' / End date of observations EQUINOX = 2000.0 / [yr] Equinox of celestial coord system RADECSYS= 'FK5 ' / celestial coord system RA_NOM = 5.002598 / [deg] R.A. of nominal aspect point [J2000] DEC_NOM = -67.00019 / [deg] Dec. of nominal aspect point [J2000] RA_OBJ = 5. / [deg] R.A. of target [J2000] DEC_OBJ = -67. / [deg] Dec. of target [J2000] TIMESYS = 'TT ' / Reference time system MJDREFI = 56658 / [d] MJD reference day (2014-01-01T00:00:00) MJDREFF = 0.000777592592592593 / [d] MJD reference (fraction of day) TIMEREF = 'LOCAL ' / Reference time location TASSIGN = 'SATELLITE' / Time assigned by clock TIMEUNIT= 's ' / unit for time keywords TIERRELA= 1.0E-8 / [s/s] relative errors expressed as rate TIERABSO= 1.0 / [s] timing precision in seconds TSTART = 162146975.45606 / [s] time start TSTOP = 162153085.45606 / [s] time stop CLOCKAPP= F / Clock correction applied? DEADAPP = F / Has DEADC been applied to data? LEAPINIT= 2 / [s] Leap seconds between MJDREF and TSTART END === AttitudeThe satellite attitude format uses a FITS bin table where the quaternian are listed as function of time. Other columns may be present.=== XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 100 / width of table in bytes NAXIS2 = 25500 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 8 / number of fields in each row TTYPE1 = 'TIME ' / Attitude timestamp: Secs since Jan 1 2010 00:00 TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'QPARAM ' / Att. quat. wrt. the J2000 heliocentric inertial TFORM2 = '4D ' / data format of field: 8-byte DOUBLE TTYPE3 = 'POINTING' / RA, Dec, and Pointing-angle calculated from qua TFORM3 = '3D ' / data format of field: 8-byte DOUBLE TUNIT3 = 'Deg ' / physical unit of field TTYPE4 = 'SOURCE ' / 1 = CHU4, 2 = S/C bus, 3 = hybrid twixt 1&2 TFORM4 = '1B ' / data format of field: BYTE TTYPE5 = 'SOLUTION' / 0=GOOD,1=bad-tref,2=invalid,4=hirate, ORed. 8 i TFORM5 = '1B ' / data format of field: BYTE TTYPE6 = 'RESIDUAL' / CHU 4 Residual, smaller is better. 0 if SOURCE TFORM6 = '1B ' / data format of field: BYTE TTYPE7 = 'BBO ' / CHU4 Big Bright Object flag. 0 if SOURCE==2 TFORM7 = '1B ' / data format of field: BYTE EXTNAME = 'ATTITUDE' / name of this binary table extension HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'TEMPORALDATA' / Time ordered data HDUCLAS2= 'HKP ' / Housekeeping data TELESCOP= 'NuSTAR ' / Telescope (mission) name TIMEPIXR= 0. / Set to 0.0 for compatibility with other HK item OBS_ID = '20102008001' / Observation ID TARG_ID = 0 / Target ID OBJECT = 'Sol_15245_AR2403_8' / Name of Target RA_OBJ = 160.70854 / [deg] R.A. Object DEC_OBJ = 8.0537 / [deg] Dec Object RA_NOM = 161.4078 / [deg] R.A. Nominal DEC_NOM = 7.7206 / [deg] Dec Nominal RA_PNT = -100.0 / [deg] RA pointing DEC_PNT = -100.0 / [deg] Dec pointing PA_PNT = -100.0 / [deg] Position angle (roll) EQUINOX = 2000. / Equinox for pointing RA/Dec RADECSYS= 'FK5 ' / Coordinate system TASSIGN = 'SATELLITE' / Time assigned by onboard clock TIMESYS = 'TT ' / Terrestrial Time MJDREFI = 55197 / MJD ref day 01 Jan 2010 00:00:00 UTC MJDREFF = 0.00076601852 / Frac part of MJD ref (32.184secs+34leapsecs) TIMEREF = 'LOCAL ' / Time reference CLOCKAPP= F / TRUE if timestamps corrected by gnd sware TIMEUNIT= 's ' / Time unit for timing header keywords TSTART = 178884302. / Start: Elapsed secs since NuSTAR epoch TSTOP = 178889402. / Stop: Elapsed secs since NuSTAR epoch TELAPSE = 5100. / TSTOP - TSTART DATE-OBS= '2015-09-02T10:06:08' / Start, in system defined by TIMESYS DATE-END= '2015-09-02T11:31:08' / Stop, in system defined by TIMESYS ORIGIN = 'NuSTAR SOC at Caltech' / Source of FITS file CREATOR = '$Id: L1_att_write.pl 5217 2012-11-19 18:24:35Z adavis $' / Pipeline S TLM2FITS= '$Id: L1_att_write.pl 5217 2012-11-19 18:24:35Z adavis $' / L1 Softwar CHECKSUM= 'IVWdKSUZISUdISUZ' / HDU checksum updated 2020-10-06T20:30:54 DATASUM = '652484004' / data unit checksum updated 2020-10-06T20:30:54 TSORTKEY= 'TIME ' TTYPE8 = 'QPARAM_ORIG' / label for field TFORM8 = '4D ' / format of field END Note: Additinal instrument specific keywords, HISTORY and COMMENT have been removed === ImagesSky images are stored as a two-dimensional array that may be stored in the FITS primary header or in a FITS IMAGE extension. The two formats are shown below. Data may be stored with different coordinates/projections.As a primary array=== SIMPLE = T / conforms to FITS standard BITPIX = -64 / array data type NAXIS = 2 / number of array dimensions NAXIS1 = 2000 / length of data axis 1 NAXIS2 = 1000 / length of data axis 2 EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronom COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H HDUCLASS= 'OGIP ' / File conforms to OGIP/GSFC conventions HDUCLAS1= 'IMAGE ' / Extension contains an image TELESCOP= 'MAXI ' / Telescope (mission) name INSTRUME= 'SSC ' / Instrument name OBS_MODE= 'SCANNING' / Observation mode BUNIT = 'count/deg**2/cm**2/s' / Unit of primary array CTYPE1 = 'GLON-AIT' / Aitoff projection, Galactic coords CRPIX1 = 1000.5 / Reference pixel location CRVAL1 = 0.0 / Coordinates reference pixel value CDELT1 = -0.18 / Pixel size CUNIT1 = 'deg ' / Pixel unit CTYPE2 = 'GLAT-AIT' / Aitoff projection, Galactic coords CRPIX2 = 500.5 / Reference pixel location CRVAL2 = 0.0 / Coordinates reference pixel value CDELT2 = 0.18 / Pixel size CUNIT2 = 'deg ' / Pixel unit LONPOLE = 180.0 / Longitude of the pole of the coordinate system LATPOLE = 0.0 / Latitude of the pole of the coordinate system DATE-OBS= '2009-08-17' / Start date of observations (YYYY-MM-DD) DATE-END= '2011-08-27' / End date of observations (YYYY-MM-DD) E_MIN = 0.7008 / [keV] Energy Minimum E_MAX = 1.0001 / [keV] Energy Maximum PI_MIN = 192 / [chan] Pulse Invariant channel minimum PI_MAX = 274 / [chan] Pulse Invariant channel maximum PI2EN = 3.65 / [eV/chan] channel to energy conversion factor AUTHOR = 'Nakahira, Satoshi' / FITS file creator ORIGIN = 'JAXA/RIKEN/MAXI Team' / Origin of FITS file DATE = '2020-07-27T01:11:50' / file creation date (YYYY-MM-DDThh:mm:ss UT) CHECKSUM= 'MiFNNg9NMgCNMg9N' / HDU checksum updated 2020-07-27T01:11:51 DATASUM = '993611770' / data unit checksum updated 2020-07-27T01:11:51 END === As an image extension=== XTENSION= 'IMAGE ' / IMAGE extension BITPIX = -32 / number of bits per data pixel NAXIS = 2 / number of data axes NAXIS1 = 1024 / length of data axis 1 NAXIS2 = 1024 / length of data axis 2 PCOUNT = 0 / number of random group parameters GCOUNT = 1 / number of random groups CTYPE1 = 'RAWX ' / WCS axis type CUNIT1 = 'pixel ' / WCS axis unit CRVAL1 = 0.5 / WCS reference value CDELT1 = 2 / WCS coordinate increment CRPIX1 = 1. / WCS Reference point CTYPE2 = 'RAWY ' / WCS axis type CUNIT2 = 'pixel ' / WCS axis unit CRVAL2 = 0.5 / WCS reference value CDELT2 = 2 / WCS coordinate increment CRPIX2 = 1. / WCS Reference point BUNIT = 'count ' / physical units of the array values EXTNAME = 'uu436256305I' / Exposure ID HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'IMAGE ' / Image data HDUCLAS2= 'TOTAL ' / Total data values TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'UVOTA ' / Instrument name DETNAM = '1400 ' FILTER = 'U ' / Filter DATAMODE= 'IMAGE ' OBJECT = 'GRB141028a' / Object name RA_OBJ = 322.601680 / [deg] R.A. Object DEC_OBJ = -0.231450 / [deg] Dec Object OBS_ID = '00020427001' / Observation ID TARG_ID = 20427 / Target ID EXPID = 436256305 / Exposure ID SEG_NUM = 1 / Segment number EQUINOX = 2000. / default TIMEZERO= 0.0000000000000E+00 / Offset to the time column is needed RADECSYS= 'FK5' / default OBS_MODE= 'POINTING' / default ORIGIN = 'GSFC' / Source of FITS file CREATOR = 'UVOT2FITS V3.34' / Program that created this FITS file TIMESYS = 'TT ' / Time system MJDREFI = 51910. / Reference MJD Integer part MJDREFF = 7.4287037E-4 / Reference MJD fractional TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock TIMEUNIT= 's ' / Time unit TIERRELA= 1.0E-8 / [s/s] relative errors expressed as rate TIERABSO= 1.0 / [s] timing precision in seconds TSTART = 436256305.10722 / Start time TSTOP = 436258870.64736 / Stop time DATE-OBS= '2014-10-29T06:18:22' / Date of observation start DATE-END= '2014-10-29T07:01:07' / Date of observation end CLOCKAPP= F / If clock correction are applied (F/T) TELAPSE = 2565.54014003277 / TSTOP - TSTART ONTIME = 2565.54014003277 / Time on target LIVETIME= 2525.07640801507 / Ontime multiplied by DEADC EXPOSURE= 2525.07640801507 / Total exposure, with all known correction DEADC = 0.984227987164845 / dead time correction FRAMTIME= 0.0110322 / Frame exposure time TLM2FITS= 'V3.34' / Telemetry converter version number DATAMIN = 0 / Data minimum DATAMAX = 52900 / Data maximum RA_PNT = 322.590481566455 / [deg] RA pointing DEC_PNT = -0.258750463550237 / [deg] Dec pointing PA_PNT = 255.772399232522 / [deg] Position angle (roll) PROCVER = '3.17.16 ' / Processing script version SOFTVER = 'Hea_27Jul2015_V6.17_Swift_Rel4.5(Bld34)_27Jul2015_SDCpatch_14' CALDBVER= 'b20171016_u20170131_x20171113_m20180103' / CALDB index versions used SEQPNUM = 8 / Number of times the dataset processed DATE = '2018-03-15T16:31:49' / file creation date (YYYY-MM-DDThh:mm:ss UT) CHECKSUM= 'MHmAOFk0MFk7MFk7' / HDU checksum updated 2018-03-15T16:38:41 DATASUM = '2511183285' / data unit checksum updated 2018-03-15T16:36:53 END Note: Additinal instrument specific keywords, HISTORY and COMMENT have been removed === LightcurvesThe lightcurve format uses a FITS bintable that lists COUNTS or RATE intensities recorded in a integrated bin time as function of TIME togheter with fractional exposure in the bin.=== XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 20 / width of table in bytes NAXIS2 = 184 / Number of bins PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 4 / number of fields in each row TTYPE1 = 'TIME ' / label for field 1 TFORM1 = 'D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'RATE ' / label for field 2 TFORM2 = 'E ' / data format of field: 4-byte REAL TUNIT2 = 'count/s ' / physical unit of field TTYPE3 = 'ERROR ' / label for field 3 TFORM3 = 'E ' / data format of field: 4-byte REAL TUNIT3 = 'count/s ' / physical unit of field TTYPE4 = 'FRACEXP ' / label for field 4 TFORM4 = 'E ' / data format of field: 4-byte REAL EXTNAME = 'RATE ' / name of this binary table extension TELESCOP= 'SUZAKU ' / Mission name INSTRUME= 'XIS0 ' / Instrument name OBS_MODE= 'POINTING' / observation mode (e.g. POINTING/SLEW) DATAMODE= 'STANDARD' / Datamode OBS_ID = '705045010' / Observation identification string OBSERVER= 'GUIDO RISALITI' / Principal Investigator OBJECT = 'IRAS 12072-0444' / Name of observed object OBS_REM = ' ' / remark on observation NOM_PNT = 'XIS ' / AimPointInDETXY:XIS=(0,0),HXD=(-3.5,0)[arcmin] RA_OBJ = 182.4379 / planned target R.A.(deg) DEC_OBJ = -5.0206 / planned target DEC.(deg) RA_PNT = 182.4466 / average optical axis location R.A.(deg) DEC_PNT = -4.9909 / average optical axis location DEC.(deg) RA_NOM = 182.4393 / nominal satellite pointing direction R.A.(deg) DEC_NOM = -5.0116 / nominal satellite pointing direction DEC.(deg) PA_NOM = 111.9489 / nominal position angle from north to DETY(deg) RADECSYS= 'FK5 ' / celestial coord system EQUINOX = 2.000E+03 / Equinox of celestial coord system DATE-OBS= '2010-12-04T01:03:59' / Start date of observations DATE-END= '2010-12-05T12:24:23' / End date of observations TSTART = 3.447568448382520E+08 / time start TSTOP = 3.448670448297644E+08 / time stop TELAPSE = 1.101999915123582E+05 / elapsed time ONTIME = 4.443632817506790E+04 / On-source time LIVETIME= 4.443632817506790E+04 / On-source time EXPOSURE= 4.443632817506790E+04 / Exposure time TIMESYS = 'TT ' / time measured from MJDREFI = 51544 / MJD reference day MJDREFF = 7.428703703703700E-04 / MJD reference (fraction of day) TIMEREF = 'LOCAL ' / reference time TIMEUNIT= 's ' / unit for time keywords TASSIGN = 'SATELLITE' / SATELLITE: times assigned on satellite CLOCKAPP= T / clock correction applied or not TIMEDEL = 2.690200000000000E+02 / Binning factor TIMEPIXR= 5.000000000000000E-01 / Timestamps give center of bin TIERRELA= -999 / short-term clock stability TIERABSO= -999 / absolute precision of the clock HDUCLASS= 'ogip ' / Format conforms to OGIP/GSFC conventions HDUCLAS1= 'LIGHTCURVE' / Extension contains a light curve HDUCLAS2= 'TOTAL ' HDUCLAS3= 'RATE ' TIMEZERO= 3.447569793482520E+08 / Time Zero CREATOR = 'extractor v5.25' / Extractor ORIGIN = 'NASA/GSFC' / origin of fits file NPIXSOU = 9.3737000000E+04 / Numbers of Pixels SEQPNUM = 2 / Number of times this dataset processed PROCVER = '3.0.22.43' / Processing script version MK1STVER= 'mk1stfits20120530' / Version of mk1stfits used SOFTVER = 'Hea_08Feb2016_V6.18_Suzaku_14Nov2013_V22' / Version of HEADAS used CALDBVER= 'hxd20110913_xis20151005_xrt20110630_xrs20060410' / Version of CALDB u PHALCUT = 0 / Minimum PI channel PHAHCUT = 4095 / Maximum PI channel DATE = '2016-06-15T08:20:31' / Date and time this file was created or updated CHECKSUM= 'HeKPKdIOHdIOHdIO' / HDU checksum updated 2016-06-15T12:24:11 DATASUM = '3310036461' / data unit checksum updated 2016-06-15T12:20:23 END Note: Additinal instrument specific keywords, HISTORY and COMMENT have been removed === SpectrumThe format for spectal file uses a FITS bintable that lists the COUNTS or RATE collected within a CHANNEL.=== XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 12 / width of table in bytes NAXIS2 = 4096 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 4 / number of fields in each row TTYPE1 = 'CHANNEL ' / Pulse Invarient (PI) Channel TFORM1 = 'J ' / data format of field: 4-byte INTEGER TLMIN1 = 0 / Lowest legal channel number TLMAX1 = 4095 / Highest legal channel number TTYPE2 = 'COUNTS ' / Counts per channel TFORM2 = 'J ' / data format of field: 4-byte INTEGER TUNIT2 = 'count ' / physical unit of field TTYPE3 = 'QUALITY ' / Quality flag of this channel (0=good) TFORM3 = 'I ' / data format of field: 2-byte INTEGER TTYPE4 = 'GROUPING' / Grouping flag for channel (0=undefined) TFORM4 = 'I ' / data format of field: 2-byte INTEGER EXTNAME = 'SPECTRUM' / name of this binary table ex HDUCLASS= 'OGIP ' / format conforms to OGIP standard HDUCLAS1= 'SPECTRUM' / PHA dataset (OGIP memo OGIP-92-007) HDUVERS1= '1.2.0 ' / Obsolete - included for backwards compatibility HDUVERS = '1.2.0 ' / Version of format (OGIP memo OGIP-92-007) HDUCLAS2= 'TOTAL ' / Gross PHA Spectrum (source + bkgd) HDUCLAS3= 'COUNT ' / PHA data stored as Counts (not count/s) TELESCOP= 'SUZAKU ' / Mission name INSTRUME= 'XIS2 ' / Instrument name FILTER = 'NONE ' / Instrument filter in use EXPOSURE= 1.821298E+04 / Exposure time AREASCAL= 1.000000E+00 / Area scaling factor BACKFILE= 'ae100036010xi2_0_2x2n022e_bg.pi' / Background FITS file BACKSCAL= 2.707460E-02 / Background scale factor CORRFILE= 'none ' / Correlation FITS file CORRSCAL= 1.000000E+00 / Correlation scale factor RESPFILE= 'ae_xi2_20060213.rmf' / redistribution matrix ANCRFILE= 'ae_xi2_xisnom6_20060615.arf' / ancillary response PHAVERSN= '1992a ' / obsolete DETCHANS= 4096 / total number possible channels CHANTYPE= 'PI ' / channel type (PHA, PI etc) POISSERR= T / Poissonian errors to be assumed STAT_ERR= 0 / no statistical error specified SYS_ERR = 0 / no systematic error specified DATAMODE= 'STANDARD' / Datamode OBJECT = 'CYG X-1 ' / Name of observed object ONTIME = 1.821297769320011E+04 / On-source time LIVETIME= 1.821297769320011E+04 / On-source time DATE-OBS= '2005-10-05T04:51:39' / Start date of observations DATE-END= '2005-10-05T15:12:19' / End date of observations TSTART = 1.818063705341291E+08 / time start TSTOP = 1.818403095118155E+08 / time stop TELAPSE = 3.393897768640518E+04 / elapsed time MJD-OBS = 5.364824114257094E+04 / MJD of data start time MJDREFI = 51544 / MJD reference day MJDREFF = 7.428703703703700E-04 / MJD reference (fraction of day) TIMEREF = 'LOCAL ' / reference time TIMESYS = 'TT ' / time measured from TIMEUNIT= 's ' / unit for time keywords EQUINOX = 2.000E+03 / Equinox of celestial coord system RADECSYS= 'FK5 ' / celestial coord system CREATOR = 'grppha 3.0.1' / s/w task which wrote this dataset ORIGIN = 'NASA/GSFC' / origin of fits file TOTCTS = 5486127 / Total counts in spectrum RA_PNT = 2.995870000000000E+02 / File average of RA(degrees) DEC_PNT = 3.519900000000000E+01 / File average of DEC(degrees) OBS_ID = '100036010' / Observation identification string SEQPNUM = 5 / Number of times this dataset processed PROCVER = '3.0.22.43' / Processing script version MK1STVER= 'mk1stfits20120530' / Version of mk1stfits used SOFTVER = 'Hea_08Feb2016_V6.18_Suzaku_14Nov2013_V22' / Version of HEADAS used CALDBVER= 'hxd20110913_xis20151005_xrt20110630_xrs20060410' / Version of CALDB u DATE = '2016-05-19T13:26:13' / Date and time this file was created or updated CHECKSUM= 'Bo8LDn5IBn5IBn5I' / HDU checksum updated 2016-05-19T17:27:52 DATASUM = '342145469' / data unit checksum updated 2016-05-19T17:27:52 END Note: Additinal instrument specific keywords, HISTORY and COMMENT have been removed === Response and Ancillary responseThe response matrix file (RMF) format consists in a FITS binatable file containing two extensions the MATRIX and EBOUNDS. The data may describe the redistribution of energy (rmf) or may include also the effective area. The ancillary response file (ARF) format consists in a FITS bintable extension that includes the summed contribution of efficiency components. The contribution of the ARF may be incorporated in the RMF, known as "response" file.Response matrix=== XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 34 / width of table in bytes NAXIS2 = 32768 / number of rows in table PCOUNT = 6682272 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 6 / number of fields in each row EXTNAME = 'MATRIX ' / name of this binary table extension TTYPE1 = 'ENERG_LO' / Low energy bound TFORM1 = 'E ' / format of field TUNIT1 = 'keV ' / Physical units of field TTYPE2 = 'ENERG_HI' / High energy bound TFORM2 = 'E ' / format of field TUNIT2 = 'keV ' / Physical units of field TTYPE3 = 'N_GRP ' / Number of channel subsets TFORM3 = 'I ' / format of field TTYPE4 = 'F_CHAN ' / First channel in each subset TFORM4 = 'PJ(1) ' / format of field TLMIN4 = 0 / Min legal value TLMAX4 = 32767 / Max legal value TTYPE5 = 'N_CHAN ' / Number chans in each subset TFORM5 = 'PJ(1) ' / format of field TTYPE6 = 'MATRIX ' / (non-zero) Matrix elements TFORM6 = 'PE(49) ' / format of field TELESCOP= 'HITOMI ' / Telescope mission name INSTRUME= 'SXS ' / Instrument name DETNAM = 'PIXEL ' / Detector subsystem FILTER = ' ' / Filter name used CHANTYPE= 'PI ' / Type of channels (PHA, PI etc) HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'RESPONSE' / Keyword information for Caltools Software HDUCLAS2= 'RSP_MATRIX' / Keyword information for Caltools Software HDUCLAS3= 'REDIST ' / Keyword information for Caltools Software HDUVERS = '1.3.0 ' / Keyword information for Caltools Software HDUVERS1= '1.1.0 ' / Obsolete HDUVERS2= '1.2.0 ' / Obsolete RMFVERSN= '1992a ' / Obsolete LO_THRES= 1.0E-09 / Lower probability density threshold for matrix DETCHANS= 32768 / Total number of detector PHA channels NUMGRP = 32768 / Total number of groups NUMELT = 1605032 / Total number of non-zero matrix elements CHECKSUM= '4Kq46Jn14Jn14Jn1' / HDU checksum updated 2017-06-12T15:18:54 DATASUM = '239806210' / data unit checksum updated 2017-06-12T15:18:54 END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 12 / width of table in bytes NAXIS2 = 32768 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 3 / number of fields in each row EXTNAME = 'EBOUNDS ' / name of this binary table extension TTYPE1 = 'CHANNEL ' / Detector channel number TFORM1 = 'J ' / format of field TLMIN1 = 0 / Min legal value TLMAX1 = 32767 / Max legal value TTYPE2 = 'E_MIN ' / Low energy bound TFORM2 = 'E ' / format of field TUNIT2 = 'keV ' / Physical units of field TTYPE3 = 'E_MAX ' / High energy bound TFORM3 = 'E ' / format of field TUNIT3 = 'keV ' / Physical units of field TELESCOP= 'HITOMI ' / Telescope mission name INSTRUME= 'SXS ' / Instrument name DETNAM = 'PIXEL ' / Detector subsystem FILTER = ' ' / Filter name used CHANTYPE= 'PI ' / Type of channels (PHA, PI etc) HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'RESPONSE' / Keyword information for Caltools Software HDUCLAS2= 'EBOUNDS ' / Keyword information for Caltools Software HDUVERS = '1.2.0 ' / Keyword information for Caltools Software HDUVERS1= '1.1.0 ' / Obsolete HDUVERS2= '1.2.0 ' / Obsolete RMFVERSN= '1992a ' / Obsolete HDUVERS = '1.2.0 ' / Keyword information for Caltools Software HDUVERS1= '1.1.0 ' / Obsolete HDUVERS2= '1.2.0 ' / Obsolete RMFVERSN= '1992a ' / Obsolete DETCHANS= 32768 / Total number of detector PHA channels CHECKSUM= 'j9Xmm9Ujj9Ujj9Uj' / HDU checksum updated 2017-06-12T15:18:54 DATASUM = '2834799414' / data unit checksum updated 2017-06-12T15:18:54 END Note: Additinal instrument specific keywords, HISTORY and COMMENT have been removed == Ancilliary Response Matrix=== XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 12 / width of table in bytes NAXIS2 = 2400 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 3 / number of fields in each row TTYPE1 = 'ENERG_LO' / label for field 1 TFORM1 = 'E ' / data format of field: 4-byte REAL TUNIT1 = 'keV ' / physical unit of field TTYPE2 = 'ENERG_HI' / label for field 2 TFORM2 = 'E ' / data format of field: 4-byte REAL TUNIT2 = 'keV ' / physical unit of field TTYPE3 = 'SPECRESP' / label for field 3 TFORM3 = 'E ' / data format of field: 4-byte REAL TUNIT3 = 'cm**2 ' / physical unit of field EXTNAME = 'SPECRESP' / name of this binary table extension HDUCLASS= 'OGIP ' / format conforms to OGIP standard HDUCLAS1= 'RESPONSE' / dataset relates to spectral response HDUCLAS2= 'SPECRESP' / dataset contains spectral response HDUVERS = '1.1.0 ' / Version of format (OGIP memo CAL/GEN/92-002a) HDUDOC = 'OGIP memos CAL/GEN/92-002 & 92-002a' / Documents describing the forma HDUVERS1= '1.0.0 ' / Obsolete - included for backwards compatibility HDUVERS2= '1.1.0 ' / Obsolete - included for backwards compatibility TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Intrument name DETNAM = 'NONE ' / specific detector name in use FILTER = 'NONE ' / filter in use ARFVERSN= '1992a ' / Obsolete - included for backwards compatibility PHAFILE = 'UNKNOWN ' / PHA file for which this ARF created CREATOR = 'addarf 1.2.6' / s/w task which wrote this dataset DATE = '2013-01-23T23:08:10' / File creation date OBJECT = 'GRB121229A' / Name of observed object ORIGIN = 'NASA/GSFC' / Origin of fits file TARG_ID = 544347 / Target ID PROCVER = '3.15.05 ' / Processing script version RA_OBJ = 190.101208 / [deg] R.A. Object DEC_OBJ = -50.5943 / [deg] Dec Object MJDREFI = 51910 / MJD reference day MJDREFF = 0.00074287037 / MJD reference (fraction of day) TIMEREF = 'LOCAL ' / Reference time TIMESYS = 'TT ' / Time measured from TIMEUNIT= 's ' / Unit of time keywords DATAMODE= 'PHOTON ' / Datamode DATE-OBS= '2012-12-29T05:02:54' / Start date of observations DATE-END= '2012-12-31T20:42:34' / End date of observations SWIFTVER= 'Swift_Rel3.9(Bld28)_09Mar2012' / Swift software version TRIGTIME= 378450032. / [s] MET TRIGger Time for Automatic Target TSTART = 378450184.177367 / Start time TSTOP = 378450385.75424 / Stop time TELAPSE = 201.57687330246 / Elapsed time CHECKSUM= 'jdCFkdCEjdCEjdCE' / HDU checksum updated 2013-01-23T23:08:10 DATASUM = '537433982' / data unit checksum updated 2013-01-23T23:08:10 CALDBVER= 'b20090130_u20111031_x20120209_m20120503' / CALDB index versions used END Note: Additinal instrument specific keywords, HISTORY and COMMENT have been removed === |