The first interface to the XMM-Newton Science Archive (XSA) became publicly available in April 2002. The XMM-Newton Science Archive content is regularly updated with all the generated ODFs, SDFs and PPS products and with updated versions of the EPIC sources, OM sources and Slew survey sources catalogues.
Public data can be retrieved through the XSA user interface. PIs of XMM-Newton observations can retrieve their own proprietary data, through a password-protected account. It is possible as well to run SAS reduction meta-tasks, or extract spectra and/or light curves from a cursor-defined position in the field-of-view of an EPIC observation through the XMM-Newton Science Archive user interface. An XSA Guided Tour and a set of XSA Usage FAQ guide the users through the main XMM-Newton Science Archive functionalities. Data can also be retrieved directly from the archive via the AIO tool at http://xsa.esac.esa.int:8080/aio/doc/.
In 2007 the SSC performed the first bulk reprocessing of all XMM-Newton data obtained since the beginning of the mission in 1999, and all data are thus processed with SAS 6.9 or higher.
To obtain an upper limit from XMM-Newton slew and/or pointed
observations at a given sky position, there is an Upper Limit
Server under
http://xmm.esac.esa.int/external/xmm_products/slew_survey/upper_limit/uls.shtml.
Of interest may also be the http://www.ledas.ac.uk/flix/flix.html server providing flux
limits from images taken with XMM-Newton; see section A.3.2.