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XMM-Newton Science Analysis System

omichain (omichain-1.74.9) [xmmsas_20211130_0941-20.0.0]

Decreasing processing time

For ODFs with Engineering 2/4 data (ie images of dimension 1024x1024 and 2048x2048, respectively), the time taken to process the data may become considerable (in excess of one hour). If time is of importance to you, and you are only interested in the “brighter sources”, a considerable reduction in processing time can be achieved by setting the parameter “omdetectnsigma” to 2.01. For this setting, the algorithms in omdetect that search for “faint” sources will be bypassed.

XMM-Newton SOC -- 2021-11-30