XMM-Newton SAS Home Page
XMM-Newton Science Analysis System


eimsim (eimsim-2.4.2) [xmmsas_20211130_0941-20.0.0]

What is and isn't simulated

Not all features found in real XMM-Newton EPIC images are reproduced in the simulated images. The following table summarises these differences:

Feature: Simulated:
Poisson noise yes
Off-axis PSF yes
Chip gaps yes
Vignetting yes
Dead pixels (as expressed in the exposure maps) yes
Background statistics yes
Attitude wander (as expressed in the exposure maps) yes
Bright pixels no
Out-of-time events no
Scatter from RGA no
PN low-energy instrumental features no
Pile up no
Random source spectra no
Extended sources no

XMM-Newton SOC -- 2021-11-30