Derived data products and catalogs

Databases of Astro-Dcatalogs and derived data products will be created as part of a pipeline analysis process. The products and catalogs will be in FITS format and conform to HEASARC standards currently being defined for ROSAT and other earlier missions. If new data file structures are required, they will be defined in consultation with the HEASARC. The data products are intended to provide an overview of each observation. Since they are not essential for the initial analysis and may be subject to calibration modifications, they may be produced and distributed later after the calibrations have become well understood.

The catalogs will include:

• a proposal database,
• planned and completed observations,
• the data logs, and
• a list of sources detected above a certain threshold. (The lower the threshold, the harder to find sources automatically. We shall determine the threshold during the initial calibration and verification phase of the mission.)

For each observation the following will be produced:

• images in various energy bands and hardness maps,
• exposure maps, and
• background maps.

For each detected source above the threshold the following will be produced:

• a cross-correlation against existing catalogs,
• a PHA spectrum (one each for the four detectors, integrated over the whole observation).
• the light curve during the observation in the same energy bands as the images, and
• the results of a simple timing and spectral analysis.