XMM-Newton Science Analysis System . ... To avoid contamination of the masked CCD map by leakage in pixels next to charge deposits, a more conservative approach would also mask out all neighbouring pixels. The reanalysis of events in EDUSOFT (and THRESH) calls a C routine (edusoft) which interfaces to the C routine (edu_simu, written by M. Lortholary of the EPIC/Saclay team) which simulates the EDU recognition. ... XMM-Newton SOC/SSC -- 2007-07-09 ...