Herschel/HIFI data were already readable by CLASS after conversion into specific FITS file by the HiClass task from HIPE. These FITS files are however not the ones served by the Herschel Science Archive as result of the standard data processing. The CLASS community thus requested the possibility to fill Herschel/HIFI archive science products directly into CLASS.
In a nutshell, the new filler automatically recognizes the
Herschel/HIFI FITS level 2.0 and 2.5. The standard CLASS sections
(General, Position, Spectroscopy, Calibration) are filled from
the FITS header parameters. A dedicated Herschel section is added to
the CLASS Data Format in order to attach HIFI specific
metadata. The data are filled as one or several CLASS spectra
depending of the FITS level and/or context (On-The-Fly, spectral
survey, etc). The associated FLAG and LINE arrays are filled as
associated arrays (new CLASS feature documented in a separate
memo) to each spectrum data. This memo describes all these points in
details.
Keywords: CLASS Data Format
Related documents: CLASS documentation, CLASS Associated Arrays.