Open Access
Table 1
Relevant parameters of the XXL pipeline detection stage.
| Parameter | Value | Comment |
|---|---|---|
| Event selection: | ||
| MOS event flag selection | #XMMEA_EM | Same as P06 |
| pn event flag selection | (FLAG & 0x2fb002c) == 0 | Same as P06 |
| MOS patterns | [0:12] | Same as P06 |
| pn patterns | [0:4] | Same as P06 |
| Image: | ||
| Type | sky | Same as P06 |
| Configuration | co-addition of EPIC detectors | Same as P06 |
| Pixel size | 2.5′′ | Same as P06 |
| MR/1: | ||
| Wavelet type | B3-spline | Same as P06 |
| Transform algorithm | “à trou” | Same as P06 |
| Thresholds(σ) | 3, 3, 3, 3, 4, 4, 3, 3 | in P06: P < 10−3 |
| Lowest significant scale | 2 pix. | Same as P06 |
| Highest significant scale | 256 pix. | Same as P06 |
| SExtractor: | ||
| Background cell side | 512 pix. | In P06: 64 pixels |
| Background median filtering | 4 cells | Same as P06 |
| Detection threshold | 6σ | Same as P06 |
| Detection minimum area | 12 pix. | Same as P06 |
| De-blending sub-thresholds | 64 | Same as P06 |
| De-blend min. contrast | 0.003 | Same as P06 |
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