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 = '00151131000' / Observation ID TARG_ID = '151131 ' / Target ID SEG_NUM = '0 ' / Segment number TIMESYS = 'TT ' / time system MJDREFI = 51910 / MJD reference day 01 Jan 2001 00:00:00 MJDREFF = 0.00074287037 / MJD reference (fraction of day) 01 Jan 2001 00:TIMEUNIT= 's ' / Time unit for timing header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error TSTART = 146161578.39016 / Start time DATE-OBS= '2005-08-19T16:24:18' TSTOP = 146161754.12312 / Stop time DATE-END= '2005-08-19T16:29:14' CLOCKAPP= F / If clock correction are applied (F/T) ORIGIN = 'GSFC ' / Source of FITS file CREATOR = 'TDRSS2FITS V3.20' / Program that created this FITS file TLM2FITS= 'V3.20 ' / Telemetry converter version number DATE = '2007-04-24T06:12:01' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= 0.316880000000000 / [s] UTCF at TSTART CHECKSUM= 'Lee7Mcc5Lcc5Lcc5' / HDU checksum updated 2007-04-24T06:53:11 DATASUM = ' 0' / data unit checksum updated 2007-04-24T06:12:01 OBJECT = 'GRB050819' PROCVER = '3.9.12 ' / Processing script version SOFTVER = 'Hea_06Dec2006_V6.1.2_Swift_Rel2.6(Bld20)patched3_14Mar2007' / HEASOFTCALDBVER= 'b20061014_u20061116_x20061219_m20070104' / CALDB index versions used ATTFLAG = 100 / Orgin of attitude information 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 = '00151131000' / Observation ID TARG_ID = '151131 ' / Target ID SEG_NUM = '0 ' / Segment number CREATOR = 'TDRSS2FITS V3.20' / Program that created this FITS file ORIGIN = 'GSFC ' / Source of FITS file TLM2FITS= 'V3.20 ' / 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-8 / [s/s] relative errors expressed as rate TIERABSO= 1.0 / [s] timing precision in seconds CLOCKAPP= F / If clock correction are applied (F/T) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock DATE = '2007-04-24T06:12:01' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 146161578.39016 / Start time DATE-OBS= '2005-08-19T16:26:18' TSTOP = 146161754.12312 / Stop time DATE-END= '2005-08-19T16:29:14' UTCFINIT= 0.316880000000000 / [s] 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 = 151131 / Trigger Number XRA_OBJ = 358.72802734375 / [deg] XRT RA location GRB or Object XDEC_OBJ= 24.8462467193604 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 175.732960015535 / TSTOP - TSTART ONTIME = 172.150543212891 / Time on target LIVETIME= 172.150543212891 / Ontime multiplied by DEADC EXPOSURE= 172.150543212891 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= 0.31688 / [s] UTC Correction TIME UTCCSEC = 0 / UTC Correction Seconds UTCCSUBS= 15844 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 146161754.24474 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 146161754 / ccsds PacKeT SEConds PKTSUBS = 12237 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'QAAZS84WQA9WQ59W' / HDU checksum updated 2007-04-24T06:53:11 DATASUM = '2479193168' / data unit checksum updated 2007-04-24T06:12:01 PROCVER = '3.9.12 ' / Processing script version SOFTVER = 'Hea_06Dec2006_V6.1.2_Swift_Rel2.6(Bld20)patched3_14Mar2007' / HEASOFTCALDBVER= 'b20061014_u20061116_x20061219_m20070104' / CALDB index versions used ATTFLAG = 100 / Orgin of attitude information END AlT AlWv!AlZb@1pAl\@&{Al^ @0ܠAl`ʓ@::Alb@$Ale/@1pAlg24@@dAliT @- AlkwK@0ܠAlm@@Alob@1pAlq@*:Altt?@:Alv$@([ AlxF@([ Alzi@([ Al|@*:Al~.@  Alи@ ܠAlE@= 1 Al @2@Al8Y@{AlZ@([ Al}p@0ܠAl@6{Al‡@{Al@([ Al@5Al*%@,aAlL@1pAlo<@/١@Al@D#AlS@5Alݭ@{Aljj@$Al@@Al>~@&{Ala@  Al@::Al@ ܠAlȬ\@BDXAl6z@{Al @@Al0J@@dAlR@ ܠAlu^@:Al@1pAlu@  Al@"@Al@,aAl"e@([ AlD@= 1 Alg0@? 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