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Table 3.
4XMM observation classification.
| OBS CLASS | Masked fraction | 3XMM-DR8 | 4XMM-DR9 |
|---|---|---|---|
| 0 | bad area = 0% | 18% | 30% |
| 1 | 0% < bad area < 0.1% | 17% | 30% |
| 2 | 0.1% < bad area < 1% | 16% | 17% |
| 3 | 1% < bad area < 10% | 26% | 13% |
| 4 | 10% < bad area < 100% | 14% | 9% |
| 5 | bad area = 100% | 4% | 1% |
Notes. OBS_CLASS, is the observation class given in the first column, the percentage of the field considered problematic is in the second column and the percentage of fields that fall within each class for 3XMM-DR8 and 4XMM-DR9 are given in the third and fourth columns respectively.
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