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Table 2
Average percentage contribution of the different background components to the overall level.
| Camera | Band (keV) | CXB | Particle | Proton |
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| MOS1 | 2 − 10 | 1.1 ± 0.4 | 81 ± 10 | 19 ± 10 |
| MOS2 | 2 − 10 | 1.3 ± 0.4 | 80 ± 9 | 18 ± 9 |
| PN | 2 − 10 | 2.2 ± 0.8 | 90 ± 6 | 7.4 ± 6.0 |
| MOS1 | 5 − 10 | 0.5 ± 0.2 | 88 ± 8 | 12 ± 8 |
| MOS2 | 5 − 10 | 0.6 ± 0.2 | 87 ± 8 | 12 ± 8 |
| PN | 5 − 10 | 1.5 ± 0.5 | 95 ± 4 |
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Notes. All values are per cent. When calculating the brightness levels, the areas around the 30 brightest sources have been excluded. Thus, the cosmic background refers to sources with fluxes ≤ 2 × 10-14 erg s-1 cm-2.
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