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 = '01413695000' / Observation ID TARG_ID = '1413695 ' / 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 = 784675862.20846 / Start time DATE-OBS= '2025-11-12T21:31:02.2' / Start Date TSTOP = 784676025.13274 / Stop time DATE-END= '2025-11-12T21:33:45.1' / 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 = '2025-11-12T21:33:20' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -36.67492 / UTCF at TSTART CHECKSUM= 'gHeRhEcRgEcRgEcR' / HDU checksum updated 2025-11-12T21:33:20 DATASUM = ' 0' / data unit checksum updated 2025-11-12T21:33:20 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 = '01413695000' / Observation ID TARG_ID = '1413695 ' / 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 = '2025-11-12T21:33:20' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 784675862.20846 / Start time DATE-OBS= '2025-11-12T21:31:02.2' / Start Date TSTOP = 784676025.13274 / Stop time DATE-END= '2025-11-12T21:33:45.1' / Stop Date UTCFINIT= -36.67492 / 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 = 1413695 / Trigger Number XRA_OBJ = 274.010192871094 / [deg] XRT RA location GRB or Object XDEC_OBJ= 24.2216606140137 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 162.924280047417 / TSTOP - TSTART ONTIME = 160.632171630859 / Time on target LIVETIME= 160.632171630859 / Ontime multiplied by DEADC EXPOSURE= 160.632171630859 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -36.67492 / [s] UTC Correction TIME UTCCSEC = -37 / UTC Correction Seconds UTCCSUBS= 16254 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 784676025.24482 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 784676025 / ccsds PacKeT SEConds PKTSUBS = 12241 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'XUWiaSWZRSWfXSWZ' / HDU checksum updated 2025-11-12T21:33:20 DATASUM = '678491450' / data unit checksum updated 2025-11-12T21:33:20 END Ab Ab QAb @\= Ab "'@<aAb @= 1 Ab 3m@= 1 Ab ^@@dAbD@= AbW@?١@AbUD@ATAbޝs@= 1 Abg@@= 1 Ab@HAbxY@2@Ab)@2@Ab̸@RdAbo@= Ab@EAb#F@/١@AbYu@7kPAb4@> Ab,@&{AbFB[@= 1 Ab@8[ AbW@DAb+A@B@Abhp@@dAbq@/١@Abz'@,aAb@IAb[-@7kPAb]@"@Ab@([ Ab%D@ ܠAbC@([ Ab6r@GkPAb,@?١@AbG)@UǤAbsX@"@AbY@/١@AbṶ@DAb j\@ ܠAb @QAb!{D@DAb"E@  Ab"@9JAb#*@  Ab#/Z@  Ab$&@1pAb$u@*:Ab%8@@:Ab%@ ܠAb&I^@*:Ab&@K*Ab'Z@&{Ab'H,@&{Ab(k@1pAb(@0ܠAb)}1@$Ab*A@,aAb*v@"@Ab+@*:Ab+? Ab.0!l@9 jAb/qI@9 jAb0&@8T6Ab1@7Ab33@8PAb4tc@6@Ab5@8T6Ab6u@9Ab87@5 Ab9x@7Ab:@8PAb;p@7Ab=;a@8T6Ab>|P@5 Ab?@%@7!`Ab@0@6@AbB?@8PAbCb@6@AbD?@6U@AbF@7!`AbGB@7AbH@5 AbIĿ@6U@AbK@6@AbLFk@4KAbMG@5 AbN@7!`AbP o@5#fAbQJ_@7AbRN@5 AbS>@8PAbU /@7!`AbVN@9 jAbW@7!`AbX@6@AbZ5@5 Ab[Q@6U@