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Table 1

Predicted background count rates.

Energy band [keV] 0.5−2.0 2−10

Particle 0.3 2.6
Galactic 1.8 0.0
Extragalactic 1.9 0.5

Total 4.0 3.1

Notes. The count rates are given in units of 10-4ctss-1 per PSF HEW. The extragalactic component accounts for unresolved sources only and at the average four-year survey sensitivity (Table 2).

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