SIMPLE = T / file does conform to FITS standard BITPIX = 8 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format defined in Astronomy and COMMENT Astrophysics Supplement Series v44/p363, v44/p371, v73/p359, v73/p365. COMMENT Contact the NASA Science Office of Standards and Technology for the COMMENT FITS Definition document #100 and other FITS information. ORIGIN = 'HEASARC/GSFC' / Processing Site CREATOR = 'ADIMA V2M8' / Name of FITS Generating Code TELESCOP= 'EXOSAT ' / mission name INSTRUME= 'CMA1 ' / Detector CATFILE = 'ex830622_1102_1839psd1.cat' / Associated catalog filename FILTER = '4Lx ' / Filter BKGFILTR= 'OFF ' / Background rejection filter FIELDVW = 'ALL ' / Background rejection filter OFF OBCMODE = 'LDIR ' / Application Program DATAMODE= 'COMB2_ND_613_39__*' / OBC submode and LE settings OBJECT = 'CAS A ' / Field Identification RA_NOM = 3.50252250E+02 / Nominal RA (degrees) DEC_NOM = 5.85455556E+01 / Nominal DEC (degrees) EQUINOX = 1950.0 / Epoch of Coordinate System RADECSYS= 'FK4 ' / WC System OBS_MODE= 'POINTING' / observing mode ONTIME = 8252 / Exposure Time in sec DEADC = 0.961 / Sample Rate Deadtime Correction E_MIN = 5.000E-02 / Energy Min E_MAX = 2.500E+00 / Energy Max EUNIT = 'keV ' / Energy unit MINWAIT = 7.5000E-01 / Minimum wait time between output buffers (s) DATE-OBS= '23/06/83' / Date of Observations Start (dd/mm/yy) TIME-OBS= '06:08:34' / Time of Observations Start (hr:mm:ss) DATE-END= '23/06/83' / Date of Observations end (dd/mm/yy) TIME-END= '09:10:02' / Time of Observations end (hr:mm:ss) MJDREF = 4.42390E+04 / Reference time in MJD TIMESYS = '1980 1 1 00:00:00.00' / reference time in YYYY MM DD hh:mm:ss TSTART = 1.096637140E+08 / start time from TIMESYS TSTOP = 1.096746020E+08 / stop time from TIMESYS TIMEUNIT= 's ' / Time unit TELAPSE = 10889 / Observation length (s) DATE = '17/07/97' / FITS file creation date (dd/mm/yy) HISTORY Updated by LCURV 3.7 CHECKSUM= 'd1TXe1RVd1RVd1RV' / encoded HDU checksum updated on 30/01/98 DATASUM = ' 0' / data unit checksum updated on 17/07/97 SEQNUM = 100006 / Sequence Number STAR_PNT= 'STR2 ' / 2 star pointing mode END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 16 / width of table in bytes NAXIS2 = 1 / 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 = 'D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'STOP ' / label for field 2 TFORM2 = 'D ' / data format of field: 8-byte DOUBLE TUNIT2 = 's ' / physical unit of field EXTNAME = 'STDGTI ' / name of this binary table extension TELESCOP= 'EXOSAT ' / mission name INSTRUME= 'CMA1 ' / Detector FILTER = '4Lx ' / Filter OBJECT = 'CAS A ' / Field Identification CATFILE = 'ex830622_1102_1839psd1.cat' / Associated catalog filename HDUCLASS= 'OGIP ' / File conforms to OGIP/GSFC convention HDUCLAS1= 'GTI ' / File contains Good Time Intervals HDUCLAS2= 'STANDARD' / File contains Good Time Intervals MJDREF = 4.42390E+04 / Reference time in MJD TIMESYS = '1980 1 1 00:00:00.00' / reference time in YYYY MM DD hh:mm:ss CLOCKAPP= F / Barycentric Correction T if applied TIMEREF = 'LOCAL ' / reference frame for the times TASSIGN = 'MADRID ' / place of time assigment DATE-OBS= '23/06/83' / Date of Observations Start (dd/mm/yy) TIME-OBS= '06:08:34' / Time of Observations Start (hr:mm:ss) DATE-END= '23/06/83' / Date of Observations end (dd/mm/yy) TIME-END= '09:10:02' / Time of Observations end (hr:mm:ss) TELAPSE = 10889 / Observation length (s) CHECKSUM= '9W5VGT3V9T3VGT3V' / encoded HDU checksum updated on 30/01/98 DATASUM = '3073657689' / data unit checksum updated on 17/07/97 SEQNUM = 100006 / Sequence Number STAR_PNT= 'STR2 ' / 2 star pointing mode END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 14 / width of table in bytes NAXIS2 = 198059 / 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 = 'TIME ' / label for field 1 TFORM1 = 'D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'X ' / label for field 2 TFORM2 = 'I ' / data format of field: 2-byte INTEGER TUNIT2 = 'pixel ' / physical unit of field TTYPE3 = 'Y ' / label for field 3 TFORM3 = 'I ' / data format of field: 2-byte INTEGER TUNIT3 = 'pixel ' / physical unit of field TTYPE4 = 'PHA ' / label for field 4 TFORM4 = 'I ' / data format of field: 2-byte INTEGER TUNIT4 = 'chan ' / physical unit of field EXTNAME = 'EVENTS ' / name of this binary table extension TLMIN2 = -1024 / minimum legal value for DETX TLMAX2 = 1023 / maximum legal value for DETX TLMIN3 = -1024 / minimum legal value for DETY TLMAX3 = 1023 / maximum legal value for DETY TLMIN4 = 0 / minimum legal value for PHA TLMAX4 = 127 / maximum legal value for PHA TCTYP2 = 'RA---TAN' / coordinate projection: TAN TCDLT2 = -0.001111111111 / Pixel Size 1 (degrees) TCRPX2 = 0 / reference pixel axis 1 TCRVL2 = 3.50252250E+02 / Reference Point RA (degrees) TCTYP3 = 'DEC--TAN' / coordinate projection: TAN TCDLT3 = 0.001111111111 / Pixel Size 2 (degrees) TCRPX3 = 0 / reference pixel axis 2 TCRVL3 = 5.85455556E+01 / Reference Point DEC (degrees) OPTICS2 = 135 / Optical axis X in det/sky coordinates OPTICS3 = 60 / Optical axis Y in det/sky coordinates HDUCLASS= 'OGIP ' / File conforms to OGIP/GSFC convention HDUCLAS1= 'EVENTS ' / Extension contains Events MJDREF = 4.42390E+04 / Reference time in MJD TIMESYS = '1980 1 1 00:00:00.00' / reference time in YYYY MM DD hh:mm:ss TSTART = 1.096637140E+08 / start time from TIMESYS TSTOP = 1.096746020E+08 / stop time from TIMESYS TIMEUNIT= 's ' / Time unit CLOCKAPP= F / Barycentric Correction T if applied TIMEREF = 'LOCAL ' / reference frame for the times TASSIGN = 'MADRID ' / place of time assigment ORIGIN = 'HEASARC/GSFC' / Processing Site CREATOR = 'ADIMA V2M8' / Name of FITS Generating Code TELESCOP= 'EXOSAT ' / mission name INSTRUME= 'CMA1 ' / Detector FILTER = '4Lx ' / Filter OBJECT = 'CAS A ' / Field Identification CATFILE = 'ex830622_1102_1839psd1.cat' / Associated catalog filename RA_NOM = 3.50252250E+02 / Nominal RA (degrees) DEC_NOM = 5.85455556E+01 / Nominal DEC (degrees) EQUINOX = 1950.0 / Epoch of Coordinate System RADECSYS= 'FK4 ' / WC System OBS_MODE= 'POINTING' / WC System TELAPSE = 10889 / Observation length (s) ONTIME = 8252 / Exposure Time in sec DATE = '17/07/97' / FITS file creation date (dd/mm/yy) DEADC = 0.961 / Sample Rate Deadtime Correction OBCMODE = 'LDIR ' / Application Program DATAMODE= 'COMB2_ND_613_39__*' / OBC submode and LE settings GRATING = 'NONE ' / No transmission grating present BKGFILTR= 'OFF ' / Background rejection filter FIELDVW = 'ALL ' / Background rejection filter OFF E_MIN = 5.000E-02 / Energy Min E_MAX = 2.500E+00 / Energy Max EUNIT = 'keV ' / Energy unit DATE-OBS= '23/06/83' / Date of Observations Start (dd/mm/yy) TIME-OBS= '06:08:34' / Time of Observations Start (hr:mm:ss) DATE-END= '23/06/83' / Date of Observations end (dd/mm/yy) TIME-END= '09:10:02' / Time of Observations end (hr:mm:ss) COMMENT The DATAMODE keyword contains information on instrument and OBC COMMENT settings. The first part is the OBC sub-mode, the second indicates COMMENT whether a diamond background filter was applied (ND if no diamond COMMENT filter). The rest of the values are taken from the LE telecommand COMMENT readouts in the observation directory. The third is the high voltage COMMENT setting 2 and 1 for the CMA or the AGC gain for the PSD. The fourth is COMMENT the zoom setting and the fifth is the LE IFT status. COMMENT Several effects contributed to the total deadtime correction for the COMMENT CMA instrument. The most important was due to a telemetry limitation COMMENT imposed by the requirements of the other onboard instruments and by COMMENT the background variability of the CMA itself. As a consequence, not COMMENT all the events collected by the telescopes in conjunction with the COMMENT CMA detectors were transmitted on ground. This correction varies COMMENT enourmously and depends on the observation length. The ONTIME keyword, COMMENT contained in this table, stores the exposure corrected for the COMMENT telemetry events loss as well as for the deadtime due to the COMMENT electronics. The ONTIME is valid only for the time interval stored in COMMENT the TELAPSE keyword. The DEADC keyword includes only the deadtime COMMENT correction due to the electronics. CHECKSUM= 'IYA6JV46IVA6IV36' / encoded HDU checksum updated on 24/02/98 DATASUM = '3881767459' / data unit checksum updated on 17/07/97 TROTA3 = 1.11938056E+02 / Roll Angle + 90 degress TCROT3 = 1.11938056E+02 / Roll Angle + 90 degress SEQNUM = 100006 / Sequence Number STAR_PNT= 'STR2 ' / 2 star pointing mode END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 16 / width of table in bytes NAXIS2 = 1355 / 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 = 'TIME ' / label for field 1 TFORM1 = 'D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'FRACEXP ' / label for field 2 TFORM2 = 'E ' / data format of field: 4-byte REAL TTYPE3 = 'DEADTEL ' / label for field 3 TFORM3 = 'E ' / data format of field: 4-byte REAL EXTNAME = 'EXPOSURE' / name of this binary table extension HDUCLASS= 'OGIP ' / File conforms to OGIP/GSFC convention HDUCLAS1= 'LIGHTCURVE' / HDUCLAS2= 'EXPOSURE' / Fractional exposure vs. Time MJDREF = 4.423900000E+04 / Reference time in MJD TIMESYS = '1980 1 1 00:00:00.00' / reference time in YYYY MM DD hh:mm:ss CLOCKAPP= F / Barycentric Correction T if applied TIMEREF = 'LOCAL ' / reference frame for the times TASSIGN = 'MADRID ' / place of time assigment TIMEDEL = 8.000000000E+00 / integration time in TIMEUNIT MINEXP = 4.000000000E-01 / Minimum exposure cutoff TSTART = 1.096637140E+08 / start time from TIMESYS TSTOP = 1.096746020E+08 / stop time from TIMESYS TIMEUNIT= 's ' / Time unit ORIGIN = 'HEASARC/GSFC' / Processing Site CREATOR = 'ADIMA V2M7' / Name of FITS Generating Code TELESCOP= 'EXOSAT ' / mission name INSTRUME= 'CMA1 ' / Detector FILTER = '4Lx ' / Filter OBJECT = 'CAS A ' / Field Identification RA_NOM = 3.502522500E+02 / Nominal RA (degrees) DEC_NOM = 5.854555560E+01 / Nominal DEC (degrees) EQUINOX = 1950.0 / Epoch of Coordinate System RADECSYS= 'FK4 ' / WC System OBS_MODE= 'POINTING' / WC System ONTIME = 8252 / Exposure Time in sec E_MIN = 5.000E-02 / Energy Min E_MAX = 2.500E+00 / Energy Max EUNIT = 'keV ' / Energy unit DATE-OBS= '23/06/83' / Date of Observations Start (dd/mm/yy) TIME-OBS= '06:08:34' / Time of Observations Start (hr:mm:ss) DATE-END= '23/06/83' / Date of Observations end (dd/mm/yy) TIME-END= '09:10:02' / Time of Observations end (hr:mm:ss) TELAPSE = 10889 / Observation length (s) DATE = '17/07/97' / FITS file creation date (dd/mm/yy) DATAMODE= 'COMB2_ND_613_39__*' / OBC Program Running CATFILE = 'ex830622_1102_1839psd1.cat' / Associated catalog filename COMMENT The EXPOSURE table contains the fractional exposure calculated every 8 COMMENT seconds integration. The column FRACEXP includes deadtime effects for COMMENT the telemetry events loss as well as for the deadtime due to the COMMENT electronics. The column DEADTEL includes only deadtime effects for the COMMENT telemetry events loss CHECKSUM= 'BkaJEiUGBiZGBiZG' / encoded HDU checksum updated on 30/01/98 DATASUM = ' 653033685' / data unit checksum updated on 17/07/97 SEQNUM = 100006 / Sequence Number STAR_PNT= 'STR2 ' / 2 star pointing mode END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 28 / width of table in bytes NAXIS2 = 14287 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 6 / number of fields in each row TTYPE1 = 'TIME ' / Ground time TFORM1 = 'D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'SHFTIME ' / Short history file key TFORM2 = 'J ' / data format of field: 4-byte INTEGER TUNIT2 = 's ' / physical unit of field TTYPE3 = 'PRTIME ' / Packet reference time scale 2^-14 TFORM3 = 'D ' / data format of field: 8-byte DOUBLE TUNIT3 = 's ' / physical unit of field TTYPE4 = 'BCTIME ' / Buffer collection time scale 2^-5 TFORM4 = 'E ' / data format of field: 4-byte REAL TUNIT4 = 's ' / physical unit of field TTYPE5 = 'BAD ' / Background rejection counter TFORM5 = 'I ' / data format of field: 2-byte INTEGER TTYPE6 = 'SAMPLES ' / Number of samples in packet TFORM6 = 'I ' / data format of field: 2-byte INTEGER EXTNAME = 'OBC_PACKET' / name of this binary table extension TSCAL3 = 6.103515625E-05 / Conversion to seconds: 2^-14 TSCAL4 = 3.125E-02 / Conversion to seconds: 2^-5 ORIGIN = 'HEASARC/GSFC' / origin of FITS file DATE = '17/07/97' / FITS file creation date (dd/mm/yy) TELESCOP= 'EXOSAT ' / Telescope (mission) name INSTRUME= 'CMA1 ' / Detector FILTER = '4 Lx ' / Filter HDUCLASS= 'OGIP ' / File conforms to OGIP/GSFC convention HDUCLAS1= 'TEMPORALDATA' / MJDREF = 4.42390E+04 / Reference time in MJD EQUINOX = 1950.0 / Equinox of celestial coord system RADECSYS= 'FK4 ' / Coordinate frame used for EQUINOX COUNTCOR= 1.240 / Correction to packet counts TIMECONV= 6.103515625E-05 / Conversion of HKSTART to seconds DATE-OBS= '23/06/83' / Date of Observations Start (dd/mm/yy) TIME-OBS= '06:08:34' / Time of Observations Start (hr:mm:ss) DATE-END= '23/06/83' / Date of Observations end (dd/mm/yy) TIME-END= '09:10:02' / Time of Observations end (hr:mm:ss) TSTART = 1.096637140E+08 / start time from TIMESYS TSTOP = 1.096746020E+08 / stop time from TIMESYS TIMEUNIT= 's ' / unit of time: sec MINWAIT = 7.5000E-01 / Minimum wait time between output buffers (s) HKSTART = 644326860 / Time to 1st HK in SCC TIMESYS = '1980 1 1 00:00:00.00' / reference time in YYYY MM DD hh:mm:ss CLOCKAPP= F / Barycentric Correction T if applied TIMEREF = 'LOCAL ' / reference frame for the times TASSIGN = 'MADRID ' / place of time assigment CATFILE = 'ex830622_1102_1839psd1.cat' / Associated catalog filename COMMENT This extension contains the telemetry information stored in the record COMMENT type E1 from the LE (LE+CMA) OBC software. This information is used to COMMENT correct the exposure for the deadtime due to telemetry event loss CHECKSUM= '5Hh76He45He45He4' / encoded HDU checksum updated on 30/01/98 DATASUM = '3537831937' / data unit checksum updated on 17/07/97 SEQNUM = 100006 / Sequence Number STAR_PNT= 'STR2 ' / 2 star pointing mode END