EPIC images are produced with name Irev_obsid_ra_dec_bband.ds, where ra and dec are given by the celestial coordinates of the centre of the image and band is the energy band. The intermediate event files used to create each image are not removed from the disk. These could be used to extract a spectrum of a source although specific software to perform this task does not yet exist. EPIC exposure maps are produced with the same names as the images but starting with an 'E' instead of an 'I'. Last, a set of files with names Irev_obsid_ra_dec_wartsnall.ds are produced which can be used for diagnostics. These files contain images with no filtering, pattern or energy cut applied.