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 is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '00323898000' / Observation ID TARG_ID = '323898 ' / Target ID SEG_NUM = '0 ' / Segment number TIMESYS = 'TT ' / Time system MJDREFI = 51910. / Reference MJD Integer part MJDREFF = 0.00074287037 / Reference MJD fractional TIMEUNIT= 's ' / Time unit for the time header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error TSTART = 242326656.99426 / Start time DATE-OBS= '2008-09-05T16:57:37.0' / Start Date TSTOP = 242326798.25418 / Stop time DATE-END= '2008-09-05T16:59:58.3' / Stop Date CLOCKAPP= F / If clock correction are applied (F/T) ORIGIN = 'GSFC ' / Source of FITS file CREATOR = 'TDRSS2FITS V3.21' / Program that created this FITS file TLM2FITS= 'V3.21 ' / Telemetry converter version number DATE = '2008-09-05T17:00:18' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -3.07458 / UTCF at TSTART CHECKSUM= 'gGgIhDZFgDdFgDZF' / HDU checksum updated 2008-09-05T17:00:18 DATASUM = ' 0' / data unit checksum updated 2008-09-05T17:00:18 END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 18 / width of table in bytes NAXIS2 = 100 / 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 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'RATE ' / label for field 2 TFORM2 = '1D ' / data format of field: 8-byte DOUBLE TUNIT2 = 'count/s ' / physical unit of field TTYPE3 = 'XRTMODE ' / label for field 3 TFORM3 = '1I ' / data format of field: 2-byte INTEGER EXTNAME = 'RATE ' / name of this binary table extension MESGNAME= 'XRT_LIGHTCURVE' / Name of the message COMMENT XRTMODE values COMMENT 1=null 2=Short Image 3=Long Image 4=Pile-Up Photodiode COMMENT 5=Low Rate Photodiode 6=Windowed Timing 7= Photon-Counting COMMENT 8=RAW data 9=Bias map 10=Stop TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '00323898000' / Observation ID TARG_ID = '323898 ' / Target ID SEG_NUM = '0 ' / Segment number CREATOR = 'TDRSS2FITS V3.21' / Program that created this FITS file ORIGIN = 'GSFC ' / Source of FITS file TLM2FITS= 'V3.21 ' / Telemetry converter version number EQUINOX = 2000 / Equinox RADECSYS= 'FK5 ' / Coordinates system TIMESYS = 'TT ' / Time system MJDREFI = 51910. / Reference MJD Integer part MJDREFF = 0.00074287037 / Reference MJD fractional TIMEUNIT= 's ' / Time unit for the time header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error CLOCKAPP= F / If clock correction are applied (F/T) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock DATE = '2008-09-05T17:00:18' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 242326656.99426 / Start time DATE-OBS= '2008-09-05T16:57:37.0' / Start Date TSTOP = 242326798.25418 / Stop time DATE-END= '2008-09-05T16:59:58.3' / Stop Date UTCFINIT= -3.07458 / UTCF at TSTART TIMEPIXR= 0. / Bin time beginning=0.0 middle=0.5 end=1. HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'LIGHTCURVE' / Time ordered data HDUCLAS2= 'TOTAL ' / Source + background HDUCLAS3= 'RATE ' / Data provided as rate NUMBINS = 100 / Number of valid bins in the lightcurve TRIGGER = 323898 / Trigger Number XRA_OBJ = 301.70654296875 / [deg] XRT RA location GRB or Object XDEC_OBJ= -62.5703887939453 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 141.25992000103 / TSTOP - TSTART ONTIME = 139.035217285156 / Time on target LIVETIME= 139.035217285156 / Ontime multiplied by DEADC EXPOSURE= 139.035217285156 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -3.07458 / [s] UTC Correction TIME UTCCSEC = -4 / UTC Correction Seconds UTCCSUBS= 46271 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 242326798.32496 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 242326798 / ccsds PacKeT SEConds PKTSUBS = 16248 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'EJajF9SjEGYjE9Yj' / HDU checksum updated 2008-09-05T17:00:18 DATASUM = '1362155698' / data unit checksum updated 2008-09-05T17:00:18 END A9A9nA9Y@cR"A9@F{A9#p@H[ A9 E@LI A9 h@FhA9f@K*A9@6{A9+A@::A9@K*A9B@?١@A97@SA9Z[@([ A9|S@= 1 A9rq@G8A9!.@5A9#@;*A9&j@J:A9()'@::A9*L,@/١@A9,n@3A9.C@= A90}@9JA92]:@F{A94@8[ A97t@,aA99>@<aA9;`@*:A9=L@2@A9?j@::A9A.@ A9CE@B@A9F Ec@4A9H/ @/١@A9JR^@K*A9Lt@0ܠA9Nu@7kPA9Pu@3A9R܏2@QA9TP@$A9W! @"@A9YD2@:A9[f@= A9]G@@A9_@FA9a`@$A9c>@> A9fw\@IA9h6@CA9jX@ ܠA9l{@&{A9n@&{A9p4n@9JA9r+@"@A9uH@1pA9w'g@{A9yJb$@@A9{l@7kPA9}x@*:A9@{A9Ԓy@;*A96@> A9T@BDXA9<6@:A9^/@JA9L@{A9 @ A9c@- A9@([ A9 z@- A9._@3A9P@ ܠA9s:@"@A9@ATA97@$A9r@- A9N? 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