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 = '01218969000' / Observation ID TARG_ID = '1218969 ' / 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 = 731421289.79464 / Start time DATE-OBS= '2024-03-06T12:34:49.8' / Start Date TSTOP = 731421411.05024 / Stop time DATE-END= '2024-03-06T12:36:51.1' / 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 = '2024-03-06T13:01:15' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -33.03716 / UTCF at TSTART CHECKSUM= 'gJeNhIcNgIcNgIcN' / HDU checksum updated 2024-03-06T13:01:15 DATASUM = ' 0' / data unit checksum updated 2024-03-06T13:01:15 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 = '01218969000' / Observation ID TARG_ID = '1218969 ' / 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 = '2024-03-06T13:01:15' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 731421289.79464 / Start time DATE-OBS= '2024-03-06T12:34:49.8' / Start Date TSTOP = 731421411.05024 / Stop time DATE-END= '2024-03-06T12:36:51.1' / Stop Date UTCFINIT= -33.03716 / 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 = 1218969 / Trigger Number XRA_OBJ = 298.623077392578 / [deg] XRT RA location GRB or Object XDEC_OBJ= 35.6030921936035 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 121.255600094795 / TSTOP - TSTART ONTIME = 118.878074645996 / Time on target LIVETIME= 118.878074645996 / Ontime multiplied by DEADC EXPOSURE= 118.878074645996 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -33.03716 / [s] UTC Correction TIME UTCCSEC = -34 / UTC Correction Seconds UTCCSUBS= 48142 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 731421411.26106 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 731421411 / ccsds PacKeT SEConds PKTSUBS = 13053 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'FADVF89TFAATF59T' / HDU checksum updated 2024-03-06T13:01:15 DATASUM = '1775111555' / data unit checksum updated 2024-03-06T13:01:15 END AM4AM5AM5]0@sR"AM5z@p ʠAM6o@pAM6@sAM7d@q AM8 t@pܠAM8@m AM9M@l= AM9@sR"AM:+@u|AM:6@hAM;<@m 1 AM;|p@iAMp\@pUAM>O@r7AM?@rqOAM@ B@m AM@8q@iJAMAۡ@qpAMA~@sR"AMB-!@pAMB.@p ʠAMC>h^@iJAMC @n AMDO@q AMDQD@iJAME`s@rLAME@qcAMFr:*@l7 AMFY@f!AMG0@m AMH #@sAMH@f{AMIj@eAMI @iAMJ.@jAMJR@b4AMK?+@m AMKȘ@o@AMLQ;@m AML@c AMMb@uAMM%p@\aAMNsȟ@P(ĠAMNk@W/\AMO@T#AMP @Nq AMPT@BDXAMQ@EAMQk@8[ AMR0=@1pAMRr@IJAMSA@LaAMS'(@3AMTRX@([ AMTm@<aAMUd@IAMU>@e1AMVuVm@RdAMV@FAMW@> AMX?@9JAMX*@LI AMY Y@HAMY(@$AMZ1@Nq AMZo?@H[ AM[Co@PAM[˴@M AM\TX%@YAM\U@SpAM]e,@DAM]A@"@AM^v@EAM^@9JAM_*@> AM`@1pAM`p@*:AMa"'@/١@AMa@H[ AMb3Z@"@AMb@IAMcD@1pAMcCl@$AMdU@([ AMdމ? 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