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 = '00853882000' / Observation ID TARG_ID = '853882 ' / 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 = 556288449.20954 / Start time DATE-OBS= '2018-08-18T12:34:09.2' / Start Date TSTOP = 556288554.77736 / Stop time DATE-END= '2018-08-18T12:35:54.8' / 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 = '2018-08-18T12:35:40' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -21.44774 / UTCF at TSTART CHECKSUM= 'YCaNcBWMZBaMaBWM' / HDU checksum updated 2018-08-18T12:35:40 DATASUM = ' 0' / data unit checksum updated 2018-08-18T12:35:40 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 = '00853882000' / Observation ID TARG_ID = '853882 ' / 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 = '2018-08-18T12:35:40' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 556288449.20954 / Start time DATE-OBS= '2018-08-18T12:34:09.2' / Start Date TSTOP = 556288554.77736 / Stop time DATE-END= '2018-08-18T12:35:54.8' / Stop Date UTCFINIT= -21.44774 / 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 = 853882 / Trigger Number XRA_OBJ = 104.252555847168 / [deg] XRT RA location GRB or Object XDEC_OBJ= 39.3179588317871 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.567819952965 / 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= -21.44774 / [s] UTC Correction TIME UTCCSEC = -22 / UTC Correction Seconds UTCCSUBS= 27613 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 556288554.84478 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 556288554 / ccsds PacKeT SEConds PKTSUBS = 42239 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'MBdhO9ahMAahM9ah' / HDU checksum updated 2018-08-18T12:35:40 DATASUM = '989779494' / data unit checksum updated 2018-08-18T12:35:40 END A$5A$ѩTA$S@`dA$@ATA$&,@N A$=\@JA$7@Nq A$@J:A$I&B@`A$@HA$Zk@DA$(@= A$kW@= A$U@M A$|@B@A$=@?١@A$=@J:A$@FhA$韄#@IA$('R@B@A$ʂ@8[ A$9m@EA$@> A$J@BDXA$U@PA$[@DA$N@GkPA$m?}@XA$@B@A$~@?١@A$(c@EA$@M A$n@IA$I@F{A$)x@IJA$W@ApA$:@QpA$Ý^@D#A$L@@BDXA$@S4(A$]D@UA$)t@EA$ṇ@EA$o@CA$Z@IJA$@Nq A$X@GkPA$@@PdA$o@EA$+A@LaA$@IJA${@O١@A%Ʒ@IJA%OZ@H[ A% @M A%`8@J:A%Dg@ApA%qG@G8A%v@FA%,@ZA% @CA%s@EA% 3@C4(A% c@C4(A% .[@G8A% r@B@A% ?@IA% D@GkPA% P@ATA% ً/@N A% b.^@7kPA% @= 1 A%st@Oa@A%D@P(ĠA%@FhA% \@> A%*@ATA%Y@;*A%E@EA%/@BDXA%?@JA%A/o@0ܠA%@<aA%Ru%@ApA%U@>