FITS

Reserved Keywords

Some keywords in the final Data Product are reserved by OCM and/or DPM and should not be provided by user. If they are provided then they will be overwritten.

Primary HDU keywords:

ARCFILE: Specifies final file name used in archive. It has the form {fileId}.fits.
CHECKSUM: Checksum of entire HDU. This is updated/written as the last thing done by daqDpmMerge together with DATASUM.
DATASUM: Checksum of HDU data unit alone. This is updated/written as the last thing done by daqDpmMerge together with CHECKSUM.
DATE: Time the file was written.
ORIGFILE: Specifies original file name.

Structure Keywords

The following keywords are excluded from Keyword Rules by default as they are defining the structure and cannot simply be copied.

Mandatory Keywords

SIMPLE
BITPIX
NAXIS
NAXISn
XTENSION
PGCOUNT
GCOUNT
TFIELDS
TFORM
TFORMn
TBCOLn
GROUPS
END