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 = '01342439000' / Observation ID TARG_ID = '1342439 ' / 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 = 776849915.60948 / Start time DATE-OBS= '2025-08-14T07:38:35.6' / Start Date TSTOP = 776850021.22824 / Stop time DATE-END= '2025-08-14T07:40:21.2' / 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 = '2025-08-14T07:39:53' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -36.1434 / UTCF at TSTART CHECKSUM= 'ZDaOiDZOZDaOfDYO' / HDU checksum updated 2025-08-14T07:39:53 DATASUM = ' 0' / data unit checksum updated 2025-08-14T07:39:53 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 = '01342439000' / Observation ID TARG_ID = '1342439 ' / 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 = '2025-08-14T07:39:53' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 776849915.60948 / Start time DATE-OBS= '2025-08-14T07:38:35.6' / Start Date TSTOP = 776850021.22824 / Stop time DATE-END= '2025-08-14T07:40:21.2' / Stop Date UTCFINIT= -36.1434 / 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 = 1342439 / Trigger Number XRA_OBJ = 306.327880859375 / [deg] XRT RA location GRB or Object XDEC_OBJ= 48.3812789916992 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.618759989738 / 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= -36.1434 / [s] UTC Correction TIME UTCCSEC = -37 / UTC Correction Seconds UTCCSUBS= 42830 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 776850021.24498 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 776850021 / ccsds PacKeT SEConds PKTSUBS = 12249 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'mNPDpKPCmKPCmKPC' / HDU checksum updated 2025-08-14T07:39:53 DATASUM = '4250564037' / data unit checksum updated 2025-08-14T07:39:53 END A&qA&ڐA&OO@bDXA&ש~@7kPA&`L@= A&5@F{A&qd@GkPA&6;@::A&@D#A& {@([ A&!@ATA&@3A&d@2@A&.@5A&6@::A&?M@([ A&@] A&P@9JA&6@;*A&a@;*A&}@;*A&s @B@A&a@::A& f@$A& @5A& @7kPA& Ov@2@A& @\VU A& /@<aA& 8\@FhA& @ی@*:A& ~@2@A&R!@K*A&@B@A&chI@M A& x@8[ A&t@::A&Q/@FhA&^@] A&@ A&:@EA&D@H[ A&s@BDXA&1#@GkPA&*@ ܠA&BiY@8[ A& 0@([ A&S@N A&R@"@A&d@4A&F@;*A&v;@;*A&@/١@A&,@1pA&%[@1pA&@/١@A&!k@EA&A@/١@A&2@1pA&S@- A&C@,aA&̚@$A&U=@@ܠA&@- A&f@"@A&&l@6{A& wɛ@/١@A&!l@0ܠA&!@4A&"@5A&"U@FA&#"@4A&#@- A&$4>@@ܠA&$m@:A&%E@&{A&%($@1pA&&VS@&{A&&n@*:A&'h@&{A&'9@"@A&(yWi@;*A&)@$A&)@ATA&*@O@EA&*~@:A&+$@@A&+)5@F{A&,5 @,aA&,p;@:A&-Gj@8[ A&-ϵ@  A&.XY!@*:A&.P@6{A&/i@1pA&/B@@A&0z6@@A&1f@4A&1*@ A&2@,a