XMM-Newton Science Analysis System


xmmselect (xmmselect-2.67) [xmmsas_20230412_1735-21.0.0]

Fix expression

The aim of this Fix expression button is to work with a smaller (in size) event list file, and therefore, speed up all the subsequents steps (product extraction, new filter expressions). If you click on Fix expression button, you will filter your event list file with the expression you have in the selection expression entry. And automatically, the new event list file will be loaded as the current event list file.

Once you have filtered your event list file, and the new filtered event file has been loaded automatically, the expression used for filtering is written in the fixed expression window.