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 = '00306858000' / Observation ID TARG_ID = '306858 ' / 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 = 227680834.80816 / Start time DATE-OBS= '2008-03-20T04:40:34.8' / Start Date TSTOP = 227681079.48372 / Stop time DATE-END= '2008-03-20T04:44:39.5' / 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 = '2008-03-20T04:45:42' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -2.65598 / UTCF at TSTART CHECKSUM= 'aNdObLdMaLdMaLdM' / HDU checksum updated 2008-03-20T04:45:42 DATASUM = ' 0' / data unit checksum updated 2008-03-20T04:45:42 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 = '00306858000' / Observation ID TARG_ID = '306858 ' / 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 = '2008-03-20T04:45:42' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 227680834.80816 / Start time DATE-OBS= '2008-03-20T04:40:34.8' / Start Date TSTOP = 227681079.48372 / Stop time DATE-END= '2008-03-20T04:44:39.5' / Stop Date UTCFINIT= -2.65598 / 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 = 306858 / Trigger Number XRA_OBJ = 177.777648925781 / [deg] XRT RA location GRB or Object XDEC_OBJ= 57.1556396484375 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 244.675559997559 / TSTOP - TSTART ONTIME = 242.700622558594 / Time on target LIVETIME= 242.700622558594 / Ontime multiplied by DEADC EXPOSURE= 242.700622558594 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -2.65598 / [s] UTC Correction TIME UTCCSEC = -3 / UTC Correction Seconds UTCCSUBS= 17201 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 227681079.5303 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 227681079 / ccsds PacKeT SEConds PKTSUBS = 26515 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= '9AKLG2HI98HIG8HI' / HDU checksum updated 2008-03-20T04:45:42 DATASUM = '2225745058' / data unit checksum updated 2008-03-20T04:45:42 END A$D&A$Dy#A$D @TA$Dđ*@ ܠA$DH@C4(A$D ? A$D!@A{@A$D@DKA$Di@DKA$D%@F@A$DK@CWA$D@CA$Dd0@D>A$D!@EVsA$Dv@DW1A$DI@CA$D_[@DYA$D.@F@A$Dۡ@DKA$DϘt@EVsA$DZ@DYA$DY@C$A$D,@DW1A$Dޖ>@E#fA$DS@E A$D@CA$DW@DYA$Eh@DKA$EN<@D>A$E @CA$Eʂ@D$$A$E@DW1A$EIf@DKA$E:@D$$A$E$Ŭ@D$$A$E) @BXA$E.D@C$A$E3e@CWA$E8@DKA$E=I@CA$EB?@BXA$EG!@A{@A$EL%c@E A$EQ){t@D$$A$EV-8G@BA$E[0@BɀA$E`4@CWA$Ee8v@DYA$Ej<3r@DKA$Eo?@DW1A$EtC@D>A$EyGq@F`A$E~K.@D>A$ENp@DW1A$ER@F@A$EVjU@E A$EZ)@F"@A$E]@EVsA$Ea@DW1A$Eee@E#fA$Ei"S@E A$El@F@A$Ep8@F@A$Et`@FU@A$Ex~@F"@A$E{@DYA$Ec@GT`A$EɃ[@DKA$E·@CA$Eӊ@E A$E؎@DW1A$EݒTa@D$$A$E@CWA$EЦ@DKA$E읒@CA$EO@D$$A$E _@GT`A$E@E#fA$FD@DYA$FJ@DW1A$F @C A$F@D>A$Fn@E#fA$FE@C$A$F@D$$A$F#ƿ@D$$A$F(ʁ@E A$F->l@BA$F2@C$A$F7պ@DKA$FA$Fdpz@D>A$Fi-M@A&a@