NAME

       fitsverify - Test if the input file(s) conform to the FITS format

SYNOPSIS

       fitsverify filename ...

       fitsverify @filelist.txt

DESCRIPTION

       This  task  reads  one or more input FITS files and verifies that the files conform to the
       specifications of the  FITS  Standard  document  (known  as  the  NASA/Science  Office  of
       Standards and Technology 'Definition of the Current  FITS Standard', document number, NOST
       100-2.0, available online  at https://fits.gsfc.nasa.gov/).  The input  filename  template
       may  contain  wildcard  characters,  in  which  case  all  matching  files will be tested.
       Alternatively, the name of an ASCII text file containing a list of  file  names,  one  per
       line, may be entered preceded by an '@' character.

OPTIONS

       -H     test ESO HIERARCH keywords

       -l     list all header keywords

       -q     quiet; print one-line pass/fail summary per file

       -e     only test for error conditions; don't issue warnings

       -h     Help

ERROR CONDITIONS

       • Mandatory keyword not present or out of order

       • Mandatory keyword has wrong datatype or illegal value

       • END header keyword is not present

       • Sum of table column widths is inconsistent with NAXIS1 value

       • BLANK keyword present in image with floating-point datatype

       • TNULLn keyword present for floating-point binary table column

       • Bit column has non-zero fill bits or is not left adjusted

       • ASCII TABLE column contains illegal value inconsistent with TFORMn

       • Address to a variable length array not within the data heap

       • Extraneous bytes in the FITS file following the last HDU

       • Mandatory keyword values not expressed in fixed format

       • Mandatory keyword duplicated elsewhere in the header

       • Header contains illegal ASCII character (not ASCII 32 - 126)

       • Keyword name contains illegal character

       • Keyword value field has illegal format

       • Value and comment fields not separated by a slash character

       • END keyword not filled with blanks in columns 9 - 80

       • Reserved keyword with wrong datatype or illegal value

       • EXTEND not present in the primary array if there are extensions

       • BLOCKED, if present, not among the first 36 keywords

       • XTENSION keyword in the primary array

       • Column related keyword (TFIELDS, TTYPEn,TFORMn, etc.) in an image

       • SIMPLE, EXTEND, or BLOCKED keyword in any extension

       • BSCALE, BZERO, BUNIT, BLANK, DATAMAX, DATAMIN keywords in a table

       • Image WCS keywords (CTYPEn, CRPIXn, CRVALn, etc.) in a table

       • Table WCS keywords (TCTYPn, TCRPXn, TCRVLn, etc.) in an image

       • TDIMn or THEAP keyword in an ASCII table

       • TBCOLn keyword in a Binary table

       • THEAP keyword in a binary table that has PCOUNT = 0

       • XTENSION, TFORMn, TDISPn or TDIMn value contains leading space(s)

       • Index of any WCS keyword (CRPIXn, CRVALn, etc.) greater than value of WCSAXES

       • Index  of any table column descriptor keyword (TTYPEn, TFORMn, etc.)  greater than value
         of TFIELDS

       • TSCALn or TZEROn present for an ASCII, logical, or Bit column

       • TDISPn value is inconsistent with the column datatype

       • Length of a variable length array greater than the  maximum   length  as  given  by  the
         TFORMn keyword

       • Logical column contains illegal value not equal to 'T', 'F', or 0

       • Character string column contains non-ASCII text character

       • Header fill bytes not all blanks

       • Data fill bytes not all blanks in ASCII tables or all zeros in any other type of HDU

       • Gaps between defined ASCII table columns contain characters with ASCII value > 127

WARNING CONDITIONS

       • SIMPLE = F

       • Presence of deprecated keywords BLOCKED or EPOCH

       • 2 HDUs have identical EXTNAME, EXTVER, and EXTLEVEL values

       • BSCALE or TSCALn value = 0.

       • BLANK OR TNULLn value exceeds the legal range

       • TFORMn has 'rAw' format and r is not a multiple of w

       • DATE = 'dd/mm/yy' and yy is less than 10 (Y2K problem??)

       • Index  of  any  WCS  keyword  (CRPIXn, CRVALn, etc.) greater than value of NAXIS, if the
         WCSAXES keyword is not present

       • Duplicated keyword (except COMMENT, HISTORY, blank, etc.)

       • Column name (TTYPEn) does not exist or contains characters other than letter, digit  and
         underscore

       • Calculated checksum inconsistent with CHECKSUM or DATASUM keyword

AUTHOR

       HEASARC at NASA/GSFC

REPORTING BUGS

       https://heasarc.gsfc.nasa.gov/cgi-bin/ftoolshelp