The above count-rates can be compared with calibration data taken of the Crab. Points are marked at the center of the science window with horizontal error bars showing its total length (about 1800 seconds). Sources within the field of view but not detected or with negative detection significance are plotted as flux = 0 with no vertical error bar. In the ScW ID column, a suffix of ".000" indicates that plots were compiled from NRT data; ".001" indicates CONS data.
Data for Plots
Column format: MJD(days), +/-, Flux (counts/s), +/-, angle(ISGRI only), ScW ID
Above graph shows angular distance of the source from the center of the field of view. ISGRI FoV is a 29x29 degree square (central 10 degree square is fully coded); JEM-X FoV is truncated to a 10 degree diameter circle in this analysis (central 4.8 degree diameter circle is fully coded). Points below 5 degs. are visible in JEM-X. The level of systematic noise rises towards the edges of both instruments' FoVs (see Crab calibration data).
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