Table 1: Data modes of XMM-Newton exposures included in the 2XMM catalogue.

Abbr.	Designation	Description
MOS cameras:
PFW	Prime Full Window	covering full FOV
PPW2	Prime Partial W2	small central window
PPW3	Prime Partial W3	large central window
PPW4	Prime Partial W4	small central window
PPW5	Prime Partial W5	large central window
FU	Fast Uncompressed	central CCD in timing mode
RFS	Prime Partial RFS	central CCD with different frame
		time (``Refreshed Frame Store'')
pn camera:
PFWE	Prime Full Window	covering full FOV
	Extended
PFW	Prime Full Window	covering full FOV
PLW	Prime Large Window	half the height of PFW/PFWE