The RIMO

Overview

The RIMO, or Reduced Instrument Model is a FITS file containing selected instrument characteristics that are needed by users who work with the released data products. There will be two RIMOs, one for each instrument, which will follow the same overall structure, but will differ in the details. The type of data in the RIMO can be:

Parameter 

namely scalers to give properties such as a noise level or a representative beam FWHM

Table 

to give filter transmission profiles or noise power spectra

Map 

to give beam shape

The different types of data are written into different BINTABLE extensions of the FITS file, and these are described below.

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Outstanding business:

• common or mixed items, like, eventually cross beam window functions between an HFI and an LFI beam

Detector-level parameter data

There are no detector-level products in the first release, so there will be no detector-level parameters in the accompanying RIMO. This section will serve for later releases

The detector parameter data are given in the form of a table giving the parameter values for each detector. The table columns are:

Channel identification 

For HFI these will be of the form 100-1a, where the last letter is applied to the PSBs only, and for LFI they will have the form 27M or 18S. There

will include data for its 52 bolometers. F, and will include data for its 22 .