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  = '01351008000'        / Observation ID                                 TARG_ID = '1351008 '           / 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  =      780050925.88142 / Start time                                     DATE-OBS= '2025-09-20T08:48:45.9' / Start Date                                  TSTOP   =      780051075.76046 / Stop time                                      DATE-END= '2025-09-20T08:51:15.8' / 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    = '2025-09-20T08:54:21' / file creation date (YYYY-MM-DDThh:mm:ss UT)   UTCFINIT=             -36.3612 / UTCF at TSTART                                 CHECKSUM= 'FlmaGijUFijZFijZ'   / HDU checksum updated 2025-09-20T08:54:21       DATASUM = '         0'         / data unit checksum updated 2025-09-20T08:54:21 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  = '01351008000'        / Observation ID                                 TARG_ID = '1351008 '           / 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    = '2025-09-20T08:54:21' / file creation date (YYYY-MM-DDThh:mm:ss UT)   UTCFINIT=             -36.3612 / UTCF at TSTART                                 TSTART  =      780050925.88142 / Start time                                     DATE-OBS= '2025-09-20T08:48:45.9' / Start Date                                  TSTOP   =      780051075.76046 / Stop time                                      DATE-END= '2025-09-20T08:51:15.8' / Stop Date                                   TELAPSE =     149.879040002823 / TSTOP - TSTART                                 ONTIME  =     149.879040002823 / Sum of GTIs                                    LIVETIME=     149.879040002823 / Ontime multiplied by DEADC                     EXPOSURE=     149.879040002823 / Total exposure, with all known correction      DEADC   =                   1. / dead time correction                           EXTNAME = 'wh780050925I'       / Extension name                                 HDUCLASS= 'OGIP    '           / Format conforms to OGIP standards              HDUCLAS1= 'IMAGE   '           / Image data                                     HDUCLAS2= 'TOTAL   '           / Total data values                              DATAMODE= 'IMAGEEVENT'         / Instrument operating mode                      EXPID   =            780050925 / uvot EXPosure ID                               FILTER  = 'WHITE   '           / FILTER used in exposure                        DETNAM  = '2000    '           / WHEELPOS                                       RA_PNT  =     187.323987909832 / [deg] Ra Pointing                              DEC_PNT =     47.8195044999172 / [deg] Dec Pointing                             PA_PNT  =             192.8828 / [deg] Position angle (roll)                    WINDOWX0=                  728 / Lower left hand X                              WINDOWY0=                  978 / Lower left hand Y                              WINDOWDX=                  320 / X Window width                                 WINDOWDY=                  320 / Y Window width                                 NFRAMES =                13576 / number of frames included                      GRBLOC  =                    1 / 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  =                728.5 / WCS reference value                            CDELT1  =                    2 / WCS coordinate increment                       CRPIX1  =                   1. / WCS Reference point                            CTYPE2  = 'RAWY    '           / WCS  axis type                                 CUNIT2  = 'pixel   '           / WCS axis unit                                  CRVAL2  =                978.5 / WCS reference value                            CDELT2  =                    2 / WCS coordinate increment                       CRPIX2  =                   1. / WCS Reference point                            UTCCTIME=             -36.3612 / [s] UTC Correction time                        UTCCSEC =                  -37 / UTC Correction Seconds                         UTCCSUBS=                31940 / [2*10**(-5) s] UTC Correction SubSeconds       PKTTIME =      780051197.09556 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5      PKTSEC  =            780051197 / ccsds PacKeT SEConds                           PKTSUBS =                 4778 / [2*10**(-5) s] ccsds PacKeT SUBSeconds         APID    =                  843 / Application Process Identifier                 BLANK   =          -2147483648 / Data null value                                CHECKSUM= 'MrOAOoL1MoL8MoL8'   / HDU checksum updated 2025-09-20T08:54:21       DATASUM = '686100  '           / data unit checksum updated 2025-09-20T08:54:21 END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             )#$%    $ ! "&$   '#$#""$ $ "#%  ! %! !%#"!!!"  % !#&%& ! !  &$$(#" !")!## !!"!"!!!"'" #$ $%  "
!## # "! $!!!$%"!! """'""" #(" '!!  %%! 
#& *#"('"" %"!!"""""%# ! "&!" )" !$" 
")"# !!#!%+"! ($$%##",&" ##$%#"" " ! " (! !  (%$ #!$! $%'# '!$ #!  "$!"#!"# ' $ % %(" " !!!"  !#  #)"" #"(! #
  $ !%!"!*' #"'$"!!"""%'#!"% !"$)% # "#"#!$ !!!##*  """""$)"" "!" !!%!$!  #"%!!"!#!# $"!# '!# '&
!!%  $" '+$$ '' 
" &""# !("!!!"  $ !# $" " ! %$)"!
 ) !   '"" $# $  " !  !-"" " % &!'$!!#&""##"! %#&$# $! ##$$" $ "( " #! !!'""""$#!" ! "!!" !! "!"!&!!$# #%"# #)##$"!% !& $ !'#$ #" ! $&"$$ *' " ! !"!# #!$"# 
&#!! !$"&# )"$ %"!%"$%#+"!( ! !""""$!!%$!$"$
!# $%!&!! &# %!#!!%$(!$ &!'$#" #"
"!%!  !!# #!$#"" %##$"&   ' #  $-
!+)!   # %!# ! "#!$ "!&$""&# $ !"$! $'$"#!#! "&!%!"$"&!!, !# #$#
!%! !( "!""$#% !!" ) !"
" !& $$"  $* " 
#  &%"""(!$% """"#" #" !#' !#,"""!%!"!"! "(%# $!$ !%&!$"$!  !"!#"
 
 "$%% 
 #$)$!" "#"#* %#!!""$! $,"$#!" *!"%" &#
$)" ""% "% $$!
 "#' #!   ! &##&&!%! " *"%#!"(  %%"'!"$#""&"1   ! ! $#!  !## % %"+"'!!!$  &!"#"!!"'$ *$& ! # !&%%  !!%$  "#"$! ) %%!"  #-! "
!$ &! "&$!"% "$#" 
$%!! #$!*!"!'"!## #!%" !#!## !"#"#!(%#
&    #& #$!#"" !%)"!&! " ""#    !%" #+  !!" ! !
!$ "!!% ('#" !! "
!#! !" "#!"##! !&   #!%%# ##$+#" % # " *#  &!   !%)# 
'  !#&%#)#  !!! "# &$ )& !!& % #(#"! !!&  "  #('   "*!%#$# # 
 !"!$'!!!!"%#!#$ 
 $ "#) & #!	$!$!!&#!!!%  #!*& #%% $! %   #%'!" (!%%! #% "!!#" &  ! #!!"#$""   "(! "! ! #("$#!) ## 
%!""%('"%"&& !
$& !# %  '#&%!"("$#!!! !$"#!'"# #" %! #
"!' "!! !( %&#!!"'" "% )% "%!$"#'!!!#  &""$ !#% '!"!!"  
    "$!#   !   "!!(  " "% !%!" "! #$ ##   $!!%% $&$* " !  $!#"! ##"!%#% "%!" !&!!
# $"%#!%"#')&$""  # %  ##"$%    ""!! " " #"#$#!#%! & %&   )""#  ! #!   %&$!!," ( !)"$!!!# !"(!$"# """   ""( #!! #  "&$ $&"+!!' # $" !" ##"!"'!#" " # #
" #&&!$" # !!#!!  !#$" "!# -% # ""!"$!!!!&!! !!
 "&*!#!!!  %*  ! !!")$'!#""  !  %!!!%"!! '%#$"+"","#""%!%' ! ")# !#!#"&!"  "!&  !!!! &%'#&) !! !%& &!### ! "" %!"#$ !"!&&"  !$%! %$% !% !#$ %$ "'" !+%" "!"!! $ %%'!!! !!!! !* #'%
+ ' "!    # !&( # ##!)! '"" !	
		!"$ '"!$$!$%#!& $
  "


  "! ##!! %#!"  "(!""(#!

%*$  ! #%""!#   ('# ")!  !"%

*!$! 
!!%'!$"'"  $! !& 	
 
 !!!"!!! "& &$  ,!#!! 

!Dc=
	!$ !* $" !  %#%  !!#"! -
(Â67
@	
!"! !#"###  * !>
ª"³²s	#&$""#  $"! *  #$& )!
?
Ï

Š

   !(#"! ""
 $ !" % "! !#&$!($R
3è)

!    "!&"(% " !" ( %  ##!!
"Q‹3(!" ! #() ! $ !"! " &
"& "'"$!$ #$(
	
* '!  (!!!  % & ! " ! !$#$#"""%$! 

  .!%%" !#" !   """%  #&!$$
		#"!  ! ""$ %$!&%"#$"!'##!	
"# !%"#!"&
%&! # !(( )&!!'"$# &!!.%$ )!+""!   %%!-#$!#0 !  !"!! ("!%!
) $ !"  $!#" $  #&!!*!"*%  "! "%# $' %$""&"!$!!($  $$" #!""!$$%!$!"!&!! "#"!##$"+%.!  ( "!  !   $) "$ !"    % !%$ &!!%)('$"  ! %##!"$" "!"##%# #!#"! + "$#!#!!"& $'"" !#  %"%"  $"!  " #!#$+#! # !$(  
 " "!)!!'$ %#"$ ""!  '+*!#"% !! #!  !(#!"&$"!" !""!!#&##$$#  !  "#"!  ! "  ,! % !%! "$"  !' " $$!%#!$%" "!%   #$ !#%""#(%!!!  !$    " "&)$!"!   !  $##"#$)! %%)#(&!"" "'"#( "#$ %'#!!"'!$$+%$ '!%)%#$% !  #!% "!!#*,  !##!  !")##!"! )(#$!! '(& #%# !!!# # '" %!! #!1!%!&"  %$%!"(*!!$!!"-'%!'"## #' !$ !%&&" ! " &!!&!"
  
&" $! "!!"&"&!&&#"!!$##!"!&#"!!'% !# &
%! 
"!$ ###  #   ) #% #"!!!#(!!"%$ $$#" $($'!$ !" """ ""#'"%""# ##""#"##"(! #  ! !# # #$! #  $  %!"!&" "'#"!  $% !  '$" %% $ !+%"$#(' "$"%! $% &#"##  %!#" !$! "%%!% $ &  !#  !* !!!  " ! !"!!# !!   ! ,$% """ # !!$# !&!#"",&# !! %!" #"'%$ ""$)!$#$  " '  " #'! !!!!!" !%% "#" %!'""('$'! !$."'#$ $!%%( ! $!# " !&"%*! "#&  ""$& #$!%$"  !  ,!"(#" "!! $  ""(#$ #!$$ ! " "%'! % !!'#  $"!"#"!" " %!'"#"# "!# *! +! ## "## ! !$ ! !$# !!"!"$"$* ##&(" )!" '!% !""#"!'#%#$&$#   %$ #&
! !"#!!"   !! "&  $)#%$  "%!$# !##! #""  !"!""#'#&"   *'" "!"'# ""#%##% &%"!&# ( !!"!'%%%$!##"&&%#&&$""## 
   % '""%'" !  #  $$"##% #"( "!""!! !#( "! &!!*""###&"!$& &!""!'%  #!%)"(' %%$' !!"$ $ !$!$"!# $ #"%"(! %"! !' ",!%"$ & )! "! "!#'$  "! )!("$!! ! !$"$ !$&#%$""$%#!!) ")% "#&"%
!%#  $'% !/"#'%!&!+" #+##! &*"! &  " , !%)!'"##%$" " !!%""! # ! $"#! &!("!&!$"#%$%! #(+ .$'"  %$ #$!%&#!#"  ! -" # "!  "  #!$!" #& %!""""!! "+)$"% ''$! #" " ##  & '#%"%$#  #"&#$!#)'!"#)%   
!  (!  ""$ !!$ "*!$!  " "$#% + &
#$! "'&!*!& %!%$'  !!"%""%!   !$##! "!$"!$!"""!!! "$#'%$#$'$%# #% ! &'! &!!#(#' )#! ) "!"'!!")()L6'!)!&"'#  "#"
  (!  "%  $'% !# -%$$&&"(2' $&""#"! " $%!""" &# &! #  !#& #!%!!!"!! )%"!  ''")$#"!!&$&!%'! +"& "!#'%! %%$ " !$###*" #! %# %#"&##"#"#&! %!$""#"!$"&! ! #!#)!&! &  %"! """# !#" !