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  = 'U       '           / FILTER used in exposure                        DETNAM  = '1400    '           / WHEELPOS                                       OBS_ID  = '00853824000'        / Observation ID                                 TARG_ID = '853824  '           / 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  =       556254986.1206 / Start time                                     DATE-OBS= '2018-08-18T03:16:26.1' / Start Date                                  TSTOP   =       556255236.0662 / Stop time                                      DATE-END= '2018-08-18T03:20:36.1' / 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    = '2018-08-18T03:25:12' / file creation date (YYYY-MM-DDThh:mm:ss UT)   UTCFINIT=             -21.4457 / UTCF at TSTART                                 CHECKSUM= 'ZjAgeh5gZhAgbh5g'   / HDU checksum updated 2018-08-18T03:25:12       DATASUM = '         0'         / data unit checksum updated 2018-08-18T03:25:12 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  = '00853824000'        / Observation ID                                 TARG_ID = '853824  '           / 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    = '2018-08-18T03:25:12' / file creation date (YYYY-MM-DDThh:mm:ss UT)   UTCFINIT=             -21.4457 / UTCF at TSTART                                 TSTART  =       556254986.1206 / Start time                                     DATE-OBS= '2018-08-18T03:16:26.1' / Start Date                                  TSTOP   =       556255236.0662 / Stop time                                      DATE-END= '2018-08-18T03:20:36.1' / Stop Date                                   TELAPSE =     249.945600032806 / TSTOP - TSTART                                 ONTIME  =     249.945600032806 / Sum of GTIs                                    LIVETIME=     249.945600032806 / Ontime multiplied by DEADC                     EXPOSURE=     249.945600032806 / Total exposure, with all known correction      DEADC   =                   1. / dead time correction                           EXTNAME = 'uu556254986I'       / Extension name                                 HDUCLASS= 'OGIP    '           / Format conforms to OGIP standards              HDUCLAS1= 'IMAGE   '           / Image data                                     HDUCLAS2= 'TOTAL   '           / Total data values                              DATAMODE= 'IMAGEEVENT'         / Instrument operating mode                      EXPID   =            556254986 / uvot EXPosure ID                               FILTER  = 'U       '           / FILTER used in exposure                        DETNAM  = '1400    '           / WHEELPOS                                       RA_PNT  =     169.589591609473 / [deg] Ra Pointing                              DEC_PNT =    -48.3252238447297 / [deg] Dec Pointing                             PA_PNT  =              335.958 / [deg] Position angle (roll)                    WINDOWX0=                  660 / Lower left hand X                              WINDOWY0=                 1102 / Lower left hand Y                              WINDOWDX=                  320 / X Window width                                 WINDOWDY=                  320 / Y Window width                                 NFRAMES =                22640 / 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  =                660.5 / WCS reference value                            CDELT1  =                    2 / WCS coordinate increment                       CRPIX1  =                   1. / WCS Reference point                            CTYPE2  = 'RAWY    '           / WCS  axis type                                 CUNIT2  = 'pixel   '           / WCS axis unit                                  CRVAL2  =               1102.5 / WCS reference value                            CDELT2  =                    2 / WCS coordinate increment                       CRPIX2  =                   1. / WCS Reference point                            UTCCTIME=             -21.4457 / [s] UTC Correction time                        UTCCSEC =                  -22 / UTC Correction Seconds                         UTCCSUBS=                27715 / [2*10**(-5) s] UTC Correction SubSeconds       PKTTIME =      556255243.69544 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5      PKTSEC  =            556255243 / ccsds PacKeT SEConds                           PKTSUBS =                34772 / [2*10**(-5) s] ccsds PacKeT SUBSeconds         APID    =                  843 / Application Process Identifier                 BLANK   =          -2147483648 / Data null value                                CHECKSUM= 'TlSdUlSbTlSbTlSb'   / HDU checksum updated 2018-08-18T03:25:12       DATASUM = '200322  '           / data unit checksum updated 2018-08-18T03:25:12 END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                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