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Helpdesk

Questions about Swift? Try our guide to Swift or the guide to data processing and analysis. If these don't solve your problem, please feel free to e-mail us at swifthelp@le.ac.uk.

List of acronyms and abbreviations

We are located in the Department of Physics & Astronomy , at the University of Leicester (directions).

Regions

The figures below show sensible example source and background regions for PC and WT mode.

PC source region

PC background region

The image on the left shows a typical extraction region for a bright, though not piled-up, PC observation; on the right we show a possible background region.

WT source region

WT background region

The image on the left shows a typical circular extraction region for a WT observation; on the right we show a possible background region. Alternatively, a box could be used (see below). In this case, the size perpendicular to the window is unimportant, as long as you use the same for both source and background regions.

WT box source region

WT box background region

See this thread about how to use a large annulus for a WT background region.