An EPIC MOS Auxiliary file (*M[1,2]*AUX.FIT) is created for each exposure in which at least one CCD node is producing either timing or imaging mode data. Each file consists of a single binary table. A single file per observation is created, where each row is labelled according to the relevant frame and CCD. The binary table consists of the columns listed in Table 6.
|CCDNODE||1B||CCD node identifier|
|FTCOARSE||1I||SECOND||Coarse frame time|
|FTFINE||1I||40s||Fine time frame|
|NVALID||1I||COUNTS||No. of valid events|
|NBELOW||1I||COUNTS||No. of events rejected by lower thresholding|
|NABOVE||1I||COUNTS||No. of events rejected by upper thresholding|
|FIFOOVF||1B||FIFO Overflow Flag|