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 = '01330958000' / Observation ID TARG_ID = '1330958 ' / 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 = 773509894.19522 / Start time DATE-OBS= '2025-07-06T15:51:34.2' / Start Date TSTOP = 773509999.78932 / Stop time DATE-END= '2025-07-06T15:53:19.8' / 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 = '2025-07-06T15:52:57' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -35.9158 / UTCF at TSTART CHECKSUM= 'dDaKg9WIdCaId9UI' / HDU checksum updated 2025-07-06T15:52:57 DATASUM = ' 0' / data unit checksum updated 2025-07-06T15:52:57 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 = '01330958000' / Observation ID TARG_ID = '1330958 ' / 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 = '2025-07-06T15:52:57' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 773509894.19522 / Start time DATE-OBS= '2025-07-06T15:51:34.2' / Start Date TSTOP = 773509999.78932 / Stop time DATE-END= '2025-07-06T15:53:19.8' / Stop Date UTCFINIT= -35.9158 / 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 = 1330958 / Trigger Number XRA_OBJ = 284.001007080078 / [deg] XRT RA location GRB or Object XDEC_OBJ= 32.2889671325684 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.594099998474 / 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= -35.9158 / [s] UTC Correction TIME UTCCSEC = -36 / UTC Correction Seconds UTCCSUBS= 4210 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 773509999.84784 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 773509999 / ccsds PacKeT SEConds PKTSUBS = 42392 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'Wdh2aag2Xag2aag2' / HDU checksum updated 2025-07-06T15:52:57 DATASUM = '2400167182' / data unit checksum updated 2025-07-06T15:52:57 END AÇ iƒüøAÇ iƒOÔAÇ iƒ–àL@` ¬ AÇ i„ƒ{@@d¸ AÇ i„¨&«@6{€àAÇ i…0É2@2¼@ AÇ i…¹la@8[ àAÇ i†B‘@7kPàAÇ i†Ê²@=ú AÇ i‡SUG@=ú AÇ i‡Ûøw@E‹°ÀAÇ iˆd›¦@ATˆ AÇ iˆí>-@,aAÇ i‰uá]@AÌp AÇ i‰þ„Œ@([ àAÇ iŠ‡'@9JñAÇ i‹ÊC@*:ÁAÇ i‹˜mr@/Ù¡@AÇ iŒ!ù@C¬ÀAÇ iŒ©³)@*:ÁAÇ i2VX@[¢yAÇ iºøß@0Ü AÇ iŽCœ@ATˆ AÇ iŽÌ?>@P(Ä AÇ iTáÆ@M 1 AÇ iÝ„õ@*:ÁAÇ if($@?Ù¡@AÇ iîÊ¬@GkPàAÇ i‘wmÛ@GkPàAÇ i’ @YþÍAÇ i’ˆ´9@"¼@ AÇ i“VÁ@@d¸ AÇ i“™ùð@OÙ¡@AÇ i”"@*:ÁAÇ i”«?§@FóhàAÇ i•3âÖ@*:ÁAÇ i•¼†@= 1 AÇ i–E(@0Ü AÇ i–ÍË¼@0Ü AÇ i—Vnë@/Ù¡@AÇ i—ßs@/Ù¡@AÇ i˜g´¢@=ú AÇ i˜ðW*@1Ìp AÇ i™xù±@&{€àAÇ išœà@2¼@ AÇ išŠ@@BDX AÇ i›â—@EÈÀAÇ i››…Æ@6{€àAÇ iœ$(ö@*:ÁAÇ iœ¬Ì%@"¼@ AÇ i5n@D#øÀAÇ i¾Ü@9JñAÇ ižFµ@P(Ä AÇ ižÏW“@/Ù¡@AÇ iŸWúÂ@ Ü AÇ iŸàñ@5‹°ÀAÇ i i@y@1Ìp AÇ i ñã¨@7kPàAÇ i¡z†×@\’I AÇ i¢)_@?Ù¡@AÇ i¢‹ÌŽ@,aAÇ i£o½@0Ü AÇ i£E@/Ù¡@AÇ i¤%µt@,aAÇ i¤®X£@Oa¹@AÇ i¥6û+@F˜àAÇ i¥¿žZ@= 1 AÇ i¦HA‰@T›àÀAÇ i¦Ðä¸@?Ù¡@AÇ i§Y‡@@Y†åAÇ i§â*o@RDX AÇ i¨jÍŸ@Gã8àAÇ i¨óp&@F˜àAÇ i©|U@0Ü AÇ iª¶…@V?ŒàAÇ iªY@NéÑ AÇ i«ü;@1Ìp AÇ i«žŸk@7kPàAÇ i¬'Aò@_%Å AÇ i¬¯å!@5‹°ÀAÇ i8ˆQ@5‹°ÀAÇ iÁ*Ø@/Ù¡@AÇ i®IÎ@>éÑ AÇ i®Òq7@HÓàAÇ i¯[¾@= 1 AÇ i¯ã¶í@-ú AÇ i°lYu@Gã8àAÇ i°ôü¤@;*‘AÇ i±}Ÿ,@9JñAÇ i²B[@>éÑ AÇ i²ŽåŠ@D#øÀAÇ i³ˆ@6{€àAÇ i³ +A@UÈÀAÇ i´(Îp@4›àÀAÇ i´±pø@?Ù¡@AÇ iµ:'@H[ àAÇ iµÂ·V@,aAÇ i¶KYÞ@D›àÀAÇ i¶Óý @4›àÀAÇ i·\ <@D›àÀ