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 = '00308224000' / Observation ID TARG_ID = '308224 ' / 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 = 228689615.20934 / Start time DATE-OBS= '2008-03-31T20:53:35.2' / Start Date TSTOP = 228689720.81946 / Stop time DATE-END= '2008-03-31T20:55:20.8' / 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 = '2008-03-31T20:55:28' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -2.684 / UTCF at TSTART CHECKSUM= 'hLdUkJdUhJdUhJdU' / HDU checksum updated 2008-03-31T20:55:28 DATASUM = ' 0' / data unit checksum updated 2008-03-31T20:55:28 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 = '00308224000' / Observation ID TARG_ID = '308224 ' / 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 = '2008-03-31T20:55:28' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 228689615.20934 / Start time DATE-OBS= '2008-03-31T20:53:35.2' / Start Date TSTOP = 228689720.81946 / Stop time DATE-END= '2008-03-31T20:55:20.8' / Stop Date UTCFINIT= -2.684 / 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 = 308224 / Trigger Number XRA_OBJ = 268.623718261719 / [deg] XRT RA location GRB or Object XDEC_OBJ= -26.3227863311768 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.610119998455 / 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= -2.684 / [s] UTC Correction TIME UTCCSEC = -3 / UTC Correction Seconds UTCCSUBS= 15800 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 228689720.845 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 228689720 / ccsds PacKeT SEConds PKTSUBS = 42250 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'GEN8JBN6GBN6GBN6' / HDU checksum updated 2008-03-31T20:55:28 DATASUM = '1870981284' / data unit checksum updated 2008-03-31T20:55:28 END AC k.AC FAC k(@X,AC F@C4(AC &@C4(AC Ҳ@?١@AC <@ATAC ɛ@@ܠAC :VX@D#AC \v@7kPAC j@BDXAC Q@<aAC āo@/١@AC ,@DAC J@CAC ,%@@dAC N@gJAC q;@;*AC “ȟ@BDXAC ĶR@?١@AC z@J:AC i@5AC @LI AC @s@5AC c 0@5AC хN@<aAC Ө$ @::AC ʰ@@dAC :@ApAC Ǥ@@dAC 2Q@::AC T@> AC wh@<aAC @M AC x@= AC 5@FAC S@2@AC $#@@dAC F@TAC i9@0ܠAC ƨ@= 1 AC P@,aAC ݃@;*AC g@?١@AC @9JAC 8~|@DAC [@- AC}W@ApAC"@1pAC¬2@C4(AC8@H[ AC Ŭ@IJAC *O@K*AC L܇@<aACof@7kPAC@= 1 AC}@RLAC =@2@AC[@SpAC!@FhAC>6@RDXACa7@BDXAC ı@;*AC"N@TAC$ی@::AC&e@H[ AC) @@dAC+0|@?١@AC-S@;*AC/u`@?١@AC1 @GkPAC3;@7kPAC56@3AC7õ@BDXAC:"M@3ACgb@9JAC@@IJACB{@- ACD@3ACFd@6{ACI!@"@ACK6?@F{ACMY5@BDXACO{¹@= 1 ACQL@DACSٔ@/١@ACUc@2@ACX@([ ACZ(z@BDXAC\K@= 1 AC^mh@8[ AC`&@*:ACbD@B@ACd5@3ACf@DACiK@CACk<ؙ@"@ACm_b@5ACo@2@