The PPS directory for the OM products contains files with nomenclature as described in Tables 5.2 and 5.3. As can be seen in those tables, the OM produces, among other things, sky images (*SIMAGE*.FTZ) and source lists (*SWSRLI*.FTZ). Further, there are low resolution sky images for each filter; they follow the nomenclature:
So for example, P0123700101OMX000RSIMAGV000.FTZ is the final low resolution sky image in the V filter. As with all images, it can be viewed in Hera with fv. To see what files have been summed to make the final image, search for the keyword XPROC0 in the FITS header. For our example image, this would be
XPROC0 = 'ommosaic imagesets=''product/P0123700101OMS004SIMAGE1000.FIT produc&' CONTINUE 't/P0123700101OMS415SIMAGE1000.FIT product/P0123700101OMS416SIMAGE10&' CONTINUE '00.FIT product/P0123700101OMS417SIMAGE1000.FIT product/P0123700101O&' CONTINUE 'MS418SIMAGE1000.FIT'' mosaicedset=product/P0123700101OMX000RSIMAGV0&' CONTINUE '00.FIT exposuremap=no exposure=1000 # (ommosaic-1.11.7) [xmmsas_200&' CONTINUE '61026_1802-6.6.0]'
The source list file (*SWSRLI*.FTZ) also contains useful information for the user; the column names are listed in Table 9.1.
|RA||RA of the detected source|
|DEC||Dec of the detected source|
|RATE||extracted count rate|
|RATE_ERR||error estimate on the count rate|
|SIGNIFICANCE||Significance of the detection (in )|
|MAG||Brightness of the source in magnitudes|
|MAGERR||uncertainty on the magnitude|