SciSim is the tool developed by the SOC for modeling XMM observations. It can be downloaded by XMM users for modeling sources and observation scenarios that are not described in this document. SciSim (v. 2.0 and higher) is capable of creating output files in the Observation Data File (ODF) format. For the conversion of the (default) ``temp...'' output files (described in the following) to ODFs, SciSim contains so-called ODF converters (see the SciSim online help, under ``Users Guide'', ``Detailed Users Guide'', ``ODF converters'' for details). ODFs can, once it is developed, be analysed using the SAS software (§ 6.1), making a direct comparison between models and observations possible. Until the SAS becomes available, the SciSim tools listed in Appendix A.4 can be used to convert SciSim output to other formats.
In order to make this document self-contained, we include here a general description of SciSim. Note that this is meant to be only a short introduction. The following is not a complete description of SciSim. For the most up-to-date information the SciSim online help should be consulted.