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= 'UVOTA ' / Instrument name FILTER = 'WHITE ' / FILTER used in exposure DETNAM = '2000 ' / WHEELPOS OBS_ID = '00684098000' / Observation ID TARG_ID = '684098 ' / 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 = 483319795.68118 / Start time DATE-OBS= '2016-04-25T23:29:55.7' / Start Date TSTOP = 483319945.54918 / Stop time DATE-END= '2016-04-25T23:32:25.5' / 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 = '2016-04-25T23:33:53' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -16.17878 / UTCF at TSTART CHECKSUM= 'DchWFbgVDbgVDbgV' / HDU checksum updated 2016-04-25T23:33:53 DATASUM = ' 0' / data unit checksum updated 2016-04-25T23:33:53 END XTENSION= 'IMAGE ' / IMAGE extension BITPIX = 32 / number of bits per data pixel NAXIS = 2 / number of data axes NAXIS1 = 160 / length of data axis 1 NAXIS2 = 160 / length of data axis 2 PCOUNT = 0 / required keyword; must = 0 GCOUNT = 1 / required keyword; must = 1 MESGNAME= 'UVOT_GENI_IMAGE' / Name of the message TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'UVOTA ' / Instrument name OBS_ID = '00684098000' / Observation ID TARG_ID = '684098 ' / 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 = '2016-04-25T23:33:53' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -16.17878 / UTCF at TSTART TSTART = 483319795.68118 / Start time DATE-OBS= '2016-04-25T23:29:55.7' / Start Date TSTOP = 483319945.54918 / Stop time DATE-END= '2016-04-25T23:32:25.5' / Stop Date TELAPSE = 149.867999970913 / TSTOP - TSTART ONTIME = 149.867999970913 / Sum of GTIs LIVETIME= 149.867999970913 / Ontime multiplied by DEADC EXPOSURE= 149.867999970913 / Total exposure, with all known correction DEADC = 1. / dead time correction EXTNAME = 'wh483319795I' / Extension name HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'IMAGE ' / Image data HDUCLAS2= 'TOTAL ' / Total data values DATAMODE= 'IMAGEEVENT' / Instrument operating mode EXPID = 483319795 / uvot EXPosure ID FILTER = 'WHITE ' / FILTER used in exposure DETNAM = '2000 ' / WHEELPOS RA_PNT = 280.287299467843 / [deg] Ra Pointing DEC_PNT = -54.3496075256536 / [deg] Dec Pointing PA_PNT = 101.3256 / [deg] Position angle (roll) WINDOWX0= 938 / Lower left hand X WINDOWY0= 838 / Lower left hand Y WINDOWDX= 320 / X Window width WINDOWDY= 320 / Y Window width NFRAMES = 13575 / number of frames included GRBLOC = 0 / GRB Location 1=XRT 0=MODE CMD BPEHWIN = 0 / BPE hardware window height BINX = 2 / Binning in the x-axis BINY = 2 / Binning in the y-axis CMPCNTMN= F / Compression losses didn't occurred in the imageCMPOTHRS= 8191 / Overflow of lossy compression algorithm CMPUTHRS= -8192 / Underflow of lossy compression algorithm CTYPE1 = 'RAWX ' / WCS axis type CUNIT1 = 'pixel ' / WCS axis unit CRVAL1 = 938.5 / WCS reference value CDELT1 = 2 / WCS coordinate increment CRPIX1 = 1. / WCS Reference point CTYPE2 = 'RAWY ' / WCS axis type CUNIT2 = 'pixel ' / WCS axis unit CRVAL2 = 838.5 / WCS reference value CDELT2 = 2 / WCS coordinate increment CRPIX2 = 1. / WCS Reference point UTCCTIME= -16.17878 / [s] UTC Correction time UTCCSEC = -17 / UTC Correction Seconds UTCCSUBS= 41061 / [2*10**(-5) s] UTC Correction SubSeconds PKTTIME = 483319952.6956 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 483319952 / ccsds PacKeT SEConds PKTSUBS = 34780 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 843 / Application Process Identifier BLANK = -2147483648 / Data null value CHECKSUM= 'ed6Dfb3Ceb3Ceb3C' / HDU checksum updated 2016-04-25T23:33:53 DATASUM = '266391 ' / data unit checksum updated 2016-04-25T23:33:53 END '@( +AL, 18. 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