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 = '00686443000' / Observation ID TARG_ID = '686443 ' / 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 = 485124684.00994 / Start time DATE-OBS= '2016-05-16T20:51:24.0' / Start Date TSTOP = 485124924.79264 / Stop time DATE-END= '2016-05-16T20:55:24.8' / 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 = '2016-05-16T20:56:36' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -16.27814 / UTCF at TSTART CHECKSUM= 'eFdMhCZMeCbMeCZM' / HDU checksum updated 2016-05-16T20:56:36 DATASUM = ' 0' / data unit checksum updated 2016-05-16T20:56:36 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 = '00686443000' / Observation ID TARG_ID = '686443 ' / 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 = '2016-05-16T20:56:36' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 485124684.00994 / Start time DATE-OBS= '2016-05-16T20:51:24.0' / Start Date TSTOP = 485124924.79264 / Stop time DATE-END= '2016-05-16T20:55:24.8' / Stop Date UTCFINIT= -16.27814 / 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 = 686443 / Trigger Number XRA_OBJ = 293.721588134766 / [deg] XRT RA location GRB or Object XDEC_OBJ= 21.9005718231201 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 240.782699942589 / TSTOP - TSTART ONTIME = 238.381240844727 / Time on target LIVETIME= 238.381240844727 / Ontime multiplied by DEADC EXPOSURE= 238.381240844727 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -16.27814 / [s] UTC Correction TIME UTCCSEC = -17 / UTC Correction Seconds UTCCSUBS= 36093 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 485124924.86474 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 485124924 / ccsds PacKeT SEConds PKTSUBS = 43237 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'BjXSChXSBhXSBhXS' / HDU checksum updated 2016-05-16T20:56:36 DATASUM = '3141082508' / data unit checksum updated 2016-05-16T20:56:36 END AjLnAjLp9AjL@VAjN )_@KyAjOnn@3AjP-}@H[ AjQ>@2@AjRP@:@&{AjSaIAjX9X@V`Aj[&@U#fAj]{@TҀAj`)4@UVsAjb@Sqw Aje-@T$$Ajgu@UAjj1Sz@T`Ajl33@UAjo5@UAjqV@Q{@Ajt8@Tp`Ajvy@UAjy<@S$Aj{lL@TYAj~@L@T>Aj*o@S>j AjD x@RPAj@T$$AjGɛ@TYAjɨ@V AjKn@R%`Ajf'@T`AjOD@U<Aj$J@S AjS@UVsAjm@S@AjV'@T>Ajء@T=`AjZI@Sב@Aj^@TKAj^>l@T>Aj@T=`Aja@TҀAj@T$$Aje@S>j Aj@TW1Ajix@U AjX@T$$Ajm6@TYAj@Sqw Ajp@UoAj@TYAjt>@U<Aj@S@Ajxqa@U AjRi@V"@Aj|0@T @Aj@U Aj@U Aj`@V"@Aj؃@T`Aj@UoAj݇k<@WT`Aj I@V"@Aj*@V"@Aj @U ߀Aj@Vo:Aj;@V<-Aj쒥@U Aj^@V@Ajc@Vo:AjC@Vo:Aj!@VGAj@WԖAj]@WaAj@XCAk@UAk#}@UoAk]@Wn|Ak'< @X: Ak @WAk */@WAk8@Wn|Ak.@W;nAk[@X: Ak2w@X!)AkW~@XAk65@XAkQ@WAk!9 @WAk#@V<-Ak&=}@V`Ak(@WT`Ak+Aq@WT`Ak-P @Xm Ak0E/@WԖAk2,@XT6Ak5H@VGAk7͟@VU@Ak:L@W