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 = '00845443000' / Observation ID TARG_ID = '845443 ' / 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 = 552050019.81058 / Start time DATE-OBS= '2018-06-30T11:13:39.8' / Start Date TSTOP = 552050177.01426 / Stop time DATE-END= '2018-06-30T11:16:17.0' / 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 = '2018-06-30T11:17:34' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -21.1882 / UTCF at TSTART CHECKSUM= 'cOhRcLhRcLhRcLhR' / HDU checksum updated 2018-06-30T11:17:34 DATASUM = ' 0' / data unit checksum updated 2018-06-30T11:17:34 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 = '00845443000' / Observation ID TARG_ID = '845443 ' / 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 = '2018-06-30T11:17:34' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 552050019.81058 / Start time DATE-OBS= '2018-06-30T11:13:39.8' / Start Date TSTOP = 552050177.01426 / Stop time DATE-END= '2018-06-30T11:16:17.0' / Stop Date UTCFINIT= -21.1882 / 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 = 845443 / Trigger Number XRA_OBJ = 48.5565643310547 / [deg] XRT RA location GRB or Object XDEC_OBJ= -87.4905166625977 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 157.203680038452 / TSTOP - TSTART ONTIME = 154.872985839844 / Time on target LIVETIME= 154.872985839844 / Ontime multiplied by DEADC EXPOSURE= 154.872985839844 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -21.1882 / [s] UTC Correction TIME UTCCSEC = -22 / UTC Correction Seconds UTCCSUBS= 40590 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 552050177.13132 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 552050177 / ccsds PacKeT SEConds PKTSUBS = 6566 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'IffnJZZmIffmIZZm' / HDU checksum updated 2018-06-30T11:17:34 DATASUM = '4201685842' / data unit checksum updated 2018-06-30T11:17:34 END AsαAsβ5Asβk-@] Asβr\@LaAsγ}@V?Asδ@4Asδ[B@7kPAsεr@LaAsε@2@Asζ(D(@"@AsζX@6{Asη9@,aAsη-@Nq AsθJ>@::Asθsm@H[ Asι\@C4(Asι$@- Asκm\S@ Asκ@F{Asλ~@CAsμE9@4Asμh@1pAsν@N Asν.@ZvAsξ)N@/١@Asξt~@6{Asο;@ApAsοú@G8AsL\@1pAs@ ܠAs]@<aAsFJ@,aAsny@F{As@4AsÀ/0@2@Asѷ@0ܠAsđt@"@As@F{AsŢE@N As+^t@/١@Asƴ@:As<+@ ܠAsF@CAsM@$As֍@G8As_0@@FhAso@1pAspu@- As&@*:Asˁ@{As ^@1pAs̓ @{As<@{AsͤG@,aAs,@6{Asε"@  As>1Q@@dAs@- AsOw@{As7@FAs`@;*As_@FhAsr@&{AsL@@AsӃH@@As @&{AsԔ? As$@@T@Ase@? As٦s@@' AsP@=飠As(|@?Asila@=Asު\>@=AsKs@OAs @?As @=oAs/@>OAsp@?As@=Asɰ@@' As3@AsWi@>AsGE@As>E@=飠As!@=As@