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 = '01344131000' / Observation ID TARG_ID = '1344131 ' / 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 = 777466159.00898 / Start time DATE-OBS= '2025-08-21T10:49:19.0' / Start Date TSTOP = 777466406.9697 / Stop time DATE-END= '2025-08-21T10:53:27.0' / 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 = '2025-08-21T10:54:33' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -36.1853 / UTCF at TSTART CHECKSUM= 'nEfOoBZOnBfOnBZO' / HDU checksum updated 2025-08-21T10:54:33 DATASUM = ' 0' / data unit checksum updated 2025-08-21T10:54:33 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 = '01344131000' / Observation ID TARG_ID = '1344131 ' / 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 = '2025-08-21T10:54:33' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 777466159.00898 / Start time DATE-OBS= '2025-08-21T10:49:19.0' / Start Date TSTOP = 777466406.9697 / Stop time DATE-END= '2025-08-21T10:53:27.0' / Stop Date UTCFINIT= -36.1853 / 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 = 1344131 / Trigger Number XRA_OBJ = 358.413909912109 / [deg] XRT RA location GRB or Object XDEC_OBJ= -28.6162719726562 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 247.960719943047 / TSTOP - TSTART ONTIME = 245.580215454102 / Time on target LIVETIME= 245.580215454102 / Ontime multiplied by DEADC EXPOSURE= 245.580215454102 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -36.1853 / [s] UTC Correction TIME UTCCSEC = -37 / UTC Correction Seconds UTCCSUBS= 40735 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 777466407.04484 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 777466407 / ccsds PacKeT SEConds PKTSUBS = 2242 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'YhF5agE3YgE3agE3' / HDU checksum updated 2025-08-21T10:54:33 DATASUM = '3350642973' / data unit checksum updated 2025-08-21T10:54:33 END A+&BA+aA+@^ A+A+$C@R֠A+d@MA+@K!@A+@NA+'õ@OA+h@NOA+n@K@A+K@P@A++'@NA+lr\@K A+b9@MoA+R@K@A+/B@K@A+p2v@LQ;`A+"S@J A+@NA+3e@O& A+sA@P' A+@MA+@PZ- A+6/@K@A+w @JRA+@KQ A+@JA+:I@KQ A+{p&@K@A+_[@LQ;`A+O7@IA+>?@IA+.@K!@A+@IA+@K@A+A@LH`A+Ă@LbA+ݘ@O A+@JA+E@KQ A+Ɇ.@K@A+ǝ @K!@A+@K!@A+I|@LQ;`A+Ίl@MP|A+[@JA+ K@IA+M;@ISwA+ӎ+k@LUA+H@K A+ |@J A+PY@IA+ؑ@L.`A+ں@K@A+ʗ@JA+Ts@J A+ݕ@LH`A+֙@K@A+a@ISwA+Xy>@JRA+i@JA+XO@LQ;`A+H,@MoA+\8 @H!)A+'@J A+@LUA+@IA+_{@ISwA+X@JA+4@L.`A+"@K@A+cF@K@A+"@LH`A+@IA+&@I jA+gu@JA+d@JA+T@LUA+*D@JA+k4@J A+$_@J A+@JA+.q@K A+n@K A+@JA+Ӯ@I jA+1@JA+r@LQ;`A+@K A+y@KQ A+5V@JA+ vq@UoA+ ag@HCA+ QD@JRA+ 9A @K!@A+z0@KQ A+ 2@HPA+@IA+<@L.`