File format, types
All stageII datafiles have the same FITS (Flexible Image Transport System)
dataformat.
The different stageII filetypes in use are identified by the value of the
"CONTENT" keyword. A default suffix, appended to a file's name, may provide
a clue to its type.
File paths
By default, any file referenced by its simple name, ie. not containing any
path information, must be located in the current working directory,
otherwise it cannot be found. To use a file in an arbitrary location in the
file system, specify an absolute or relative path. The default location for
specific groups of files can be altered by defining an environment variable
for this filegroup, however a filename containing an explicit path is never
changed.
WFC_TOP=
unused.
WFC_CAL= directory
The default location of the instrument, mask and det definition files
will be directory.
WFC_SOURCEDIR = indir
WFC_DESTDIR= outdir
The default location of any input file is indir, output files are
created in outdir. When chaining some programs where the output from
the one provides the input file for the next, this really does not make
much sense. However, it can be handy when processing a lot of different
datafiles with one proces.
WFC_CONFIG = path
path is the full pathname of the wfc configuration file used in the
StageII processes to contruct the proper instrument data filename from
the FITS keys INSTRUME and TELESCOP.
In the WFC software distribution, this file has the name wfc_config and
is located in the $WFC_CAL directory.
WFC_CAT= catalogname
A SAX-WFC format specific catalog file with X-ray source position and
spectral parameters.
WFC_CATALOG= catalog-dir
A WFC specific catalog is to be searched in directory catalog-dir. do
not use, use WFC_CAT.
Other references
WFC_FITSORIG
Gives the default value for the "ORIGIN" keyword in every FITSfile
created.