--- header unit 0: primary ---
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 'Astronomy
COMMENT 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 = '00638808000' / Observation ID
TARG_ID = '638808' / 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 = 451463583.82568 / Start time
DATE-OBS = '2015-04-23T06:33:03.8' / Start Date
TSTOP = 451463833.76024 / Stop time
DATE-END = '2015-04-23T06:37:13.8' / 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 = '2015-04-23T06:40:19' / file creation date (YYYY-MM-DDThh:mm:ss UT)
UTCFINIT = -13.48392 / UTCF at TSTART
CHECKSUM = 'Qq8dRn7dQn7dQn7d' / HDU checksum updated 2015-04-23T06:40:19
DATASUM = '         0' / data unit checksum updated 2015-04-23T06:40:19
--- header unit 1: image ---
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 = '00638808000' / Observation ID
TARG_ID = '638808' / 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 = '2015-04-23T06:40:19' / file creation date (YYYY-MM-DDThh:mm:ss UT)
UTCFINIT = -13.48392 / UTCF at TSTART
TSTART = 451463583.82568 / Start time
DATE-OBS = '2015-04-23T06:33:03.8' / Start Date
TSTOP = 451463833.76024 / Stop time
DATE-END = '2015-04-23T06:37:13.8' / Stop Date
TELAPSE = 249.934560000896 / TSTOP - TSTART
ONTIME = 249.934560000896 / Sum of GTIs
LIVETIME = 249.934560000896 / Ontime multiplied by DEADC
EXPOSURE = 249.934560000896 / Total exposure, with all known correction
DEADC = 1. / dead time correction
EXTNAME = 'uu451463583I' / Extension name
HDUCLASS = 'OGIP' / Format conforms to OGIP standards
HDUCLAS1 = 'IMAGE' / Image data
HDUCLAS2 = 'TOTAL' / Total data values
DATAMODE = 'IMAGEEVENT' / Instrument operating mode
EXPID = 451463583 / uvot EXPosure ID
FILTER = 'U' / FILTER used in exposure
DETNAM = '1400' / WHEELPOS
RA_PNT = 221.604250605577 / [deg] Ra Pointing
DEC_PNT = 12.2938179362448 / [deg] Dec Pointing
PA_PNT = 24.20736 / [deg] Position angle (roll)
WINDOWX0 = 750 / Lower left hand X
WINDOWY0 = 891 / Lower left hand Y
WINDOWDX = 320 / X Window width
WINDOWDY = 320 / Y Window width
NFRAMES = 22639 / 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 image
CMPOTHRS = 8191 / Overflow of lossy compression algorithm
CMPUTHRS = -8192 / Underflow of lossy compression algorithm
CTYPE1 = 'RAWX' / WCS axis type
CUNIT1 = 'pixel' / WCS axis unit
CRVAL1 = 750.5 / WCS reference value
CDELT1 = 2 / WCS coordinate increment
CRPIX1 = 1. / WCS Reference point
CTYPE2 = 'RAWY' / WCS axis type
CUNIT2 = 'pixel' / WCS axis unit
CRVAL2 = 891.5 / WCS reference value
CDELT2 = 2 / WCS coordinate increment
CRPIX2 = 1. / WCS Reference point
UTCCTIME = -13.48392 / [s] UTC Correction time
UTCCSEC = -14 / UTC Correction Seconds
UTCCSUBS = 25804 / [2*10**(-5) s] UTC Correction SubSeconds
PKTTIME = 451463842.49554 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5
PKTSEC = 451463842 / ccsds PacKeT SEConds
PKTSUBS = 24777 / [2*10**(-5) s] ccsds PacKeT SUBSeconds
APID = 843 / Application Process Identifier
BLANK = -2147483648 / Data null value
CHECKSUM = 'j5Oem3Obj3Obj3Ob' / HDU checksum updated 2015-04-23T06:40:19
DATASUM = '57867' / data unit checksum updated 2015-04-23T06:40:19