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 = '01404295000' / Observation ID TARG_ID = '1404295 ' / 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 = 782230997.59302 / Start time DATE-OBS= '2025-10-15T14:23:17.6' / Start Date TSTOP = 782231247.47036 / Stop time DATE-END= '2025-10-15T14:27:27.5' / 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 = '2025-10-15T14:26:59' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -36.50914 / UTCF at TSTART CHECKSUM= 'bHcNdHZMbHbMbHZM' / HDU checksum updated 2025-10-15T14:26:59 DATASUM = ' 0' / data unit checksum updated 2025-10-15T14:26:59 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 = '01404295000' / Observation ID TARG_ID = '1404295 ' / 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 = '2025-10-15T14:26:59' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 782230997.59302 / Start time DATE-OBS= '2025-10-15T14:23:17.6' / Start Date TSTOP = 782231247.47036 / Stop time DATE-END= '2025-10-15T14:27:27.5' / Stop Date UTCFINIT= -36.50914 / 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 = 1404295 / Trigger Number XRA_OBJ = 245.019836425781 / [deg] XRT RA location GRB or Object XDEC_OBJ= -54.8612632751465 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 249.877340078354 / TSTOP - TSTART ONTIME = 246.715057373047 / Time on target LIVETIME= 246.715057373047 / Ontime multiplied by DEADC EXPOSURE= 246.715057373047 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -36.50914 / [s] UTC Correction TIME UTCCSEC = -37 / UTC Correction Seconds UTCCSUBS= 24543 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 782231247.52476 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 782231247 / ccsds PacKeT SEConds PKTSUBS = 26238 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'aAfdd0ZZa7fba7ZZ' / HDU checksum updated 2025-10-15T14:26:59 DATASUM = '1980428299' / data unit checksum updated 2025-10-15T14:26:59 END AOAO B@KyAO6AO#@#$AOdg@5 AOC@; AOx@7!`AO&U@4W1AOg@6@AO@6@AO鮒@9AO*o@6@AOkL@8T6AO~(@6U@AOn@9AO.]@5 AOoM@7!`AO=@6@AO-w@4KAO2@7AOs @6@AO @6U@AO@7AO5@5 AOvK@7AO '@7!`AO @5#fAO 9@8T6AO z@7!`AO{@5#fAOlv@5 AO=\S@5 AO~L0@6U@AO< @8PAO+@7AOAm@6U@AO @6U@AO@7!`AO[@7!`AOD8@b֠AO˼@5 AOƻ@7AOu@4KAO HR@7!`AO!@: AO"{ @5 AO$ j@6U@AO%LZ@5 AO&J@5#fAO':~@6U@AO)+@6U@AO*P@6@AO+ @5 AO,@5 AO.@3AO/S٩@7!`AO0.@4KAO1պ @8T6AO3@6U@AO4W@9AO5@3$AO6y}@6U@AO8iY@9AO9[Y6@5 AO:I@5#fAO;8@5 AO=)t@7AO>_@7AO?@7!`AO@b@6U@AOB!>@9 jAOCb@6U@AODȟ@4W1AOE|@5 AOG%@5 AOHf@7!`AOI@4W1AOJw@5#fAOL)g@5 AOMjW@5 AONG@6U@AOO7a@6@AOQ-'=@5#fAORn@4W1AOS@7AOT@8T6AOV0X@5#fAOWq4@6@AOX@6@AOYF@7!`AO[4"@5 AO\u@7AO]@6@AO^v`@3$AO`8f<@7AOayV@4KAObE@8PAOc5@7AOe<%@7!`AOf}@3