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 = '01403191000' / Observation ID TARG_ID = '1403191 ' / 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 = 781859440.61026 / Start time DATE-OBS= '2025-10-11T07:10:40.6' / Start Date TSTOP = 781859546.15252 / Stop time DATE-END= '2025-10-11T07:12:26.2' / 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 = '2025-10-11T07:11:56' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -36.48396 / UTCF at TSTART CHECKSUM= 'fEhSiCfQfCfQfCfQ' / HDU checksum updated 2025-10-11T07:11:56 DATASUM = ' 0' / data unit checksum updated 2025-10-11T07:11:56 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 = '01403191000' / Observation ID TARG_ID = '1403191 ' / 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 = '2025-10-11T07:11:56' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 781859440.61026 / Start time DATE-OBS= '2025-10-11T07:10:40.6' / Start Date TSTOP = 781859546.15252 / Stop time DATE-END= '2025-10-11T07:12:26.2' / Stop Date UTCFINIT= -36.48396 / 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 = 1403191 / Trigger Number XRA_OBJ = 13.2826299667358 / [deg] XRT RA location GRB or Object XDEC_OBJ= -62.0532035827637 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.542259931564 / TSTOP - TSTART ONTIME = 107.359703063965 / Time on target LIVETIME= 107.359703063965 / Ontime multiplied by DEADC EXPOSURE= 107.359703063965 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -36.48396 / [s] UTC Correction TIME UTCCSEC = -37 / UTC Correction Seconds UTCCSUBS= 25802 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 781859546.24662 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 781859546 / ccsds PacKeT SEConds PKTSUBS = 12331 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'ESK9ERJ7ERJ7ERJ7' / HDU checksum updated 2025-10-11T07:11:56 DATASUM = '27303560' / data unit checksum updated 2025-10-11T07:11:56 END AÇM8NAÇM8„ôAÇM8ÅSÎ@b¼@ AÇM9MöU@IÂÙAÇM9Ö™…@S¬ÀAÇM:_<´@P ¬ AÇM:çß;@NéÑ AÇM;p‚k@Mú AÇM;ù&B@FóhàAÇM<Éq@BDX AÇM= kø@IÂÙAÇM=“(@L’I AÇM>²W@V˜àAÇM>¤U†@Nqé AÇM?,ø@OÙ¡@AÇM?µ›=@= 1 AÇM@>>l@F˜àAÇM@Æàô@IJñAÇMAO„Ë@M 1 AÇMAØ'ú@GkPàAÇMB`Ë)@<aAÇMBém±@FóhàAÇMCrà@J:ÁAÇMCú´@J:ÁAÇMDƒW?@IÂÙAÇME ùÆ@>éÑ AÇME”œõ@RDX AÇMF@%@]ú AÇMF¥ãT@BDX AÇMG.†ƒ@@Ü  AÇMG·)³@9JñAÇMH?Ìâ@AÌp AÇMHÈoi@=ú AÇMIQ™@;*‘AÇMIÙµÈ@= 1 AÇMJbX÷@;*‘AÇMJêû@9JñAÇMKsž®@F˜àAÇMKüAÝ@4›àÀAÇML„å @"¼@ AÇMM ˆ<@PÜ  AÇMM–+k@0Ü  AÇMNΚ@8[ àAÇMN§q"@E‹°ÀAÇMO0Q@AÌp AÇMO¸·€@H[ àAÇMPAZ¯@F{€àAÇMPÉý7@9JñAÇMQR f@?Ù¡@AÇMQÛD=@IÂÙAÇMRcæÅ@ATˆ AÇMRì‰ô@@d¸ AÇMSu-#@2¼@ AÇMSýÐS@D›àÀAÇMT†rÚ@QÌp AÇMU @0Ü  AÇMU—¹9@/Ù¡@AÇMV \h@7kPàAÇMV¨þï@D#øÀAÇMW1¢@<aAÇMWºEö@¼@ AÇMXBè}@0Ü  AÇMXË‹¬@ Ü  AÇMYT.Ü@4›àÀAÇMYÜÒ @-ú AÇMZet’@F˜àAÇMZîÂ@1Ìp AÇM[vºñ@2¼@ AÇM[ÿ]y@F{€àAÇM\ˆ¨@;*‘AÇM]¤@"¼@ AÇM]™G®@4›àÀAÇM^!ê6@Pd¸ AÇM^ªe@NéÑ AÇM_30”@@Ü  AÇM_»ÓÃ@;*‘AÇM`DvK@C¬ÀAÇM`Íz@:ÁAÇMaU¼©@,aAÇMaÞ_1@YJñAÇMbg`@$›àÀAÇMbï¥@mF% AÇMcxIf@B¼@ AÇMdëî@$›àÀAÇMd‰@8[ àAÇMe2M@{€àAÇMešÕ|@,aAÇMf#x@EÈÀAÇMf¬3@6{€àAÇMg4¾b@1Ìp AÇMg½`é@@Ü  AÇMhF@,aAÇMhΧH@{€àAÇMiWK@¼@ AÇMißí¦@8[ àAÇMjhÖ@S¬ÀAÇMjñ4@F˜àAÇMky×4@,aAÇMly¼@7kPàAÇMl‹ë@ú