E015 · local data readiness
a=0–40′：本机 XMM footprint coverage
每个 circle 是 local ATTTSR median pointing 的 15′ spherical FoV；cyan/pink contours 是实际 120-vertex variable-W1 FK5 annuli。WISE W1 仅为原始 FITS 的 WCS-reprojected display，不是 X-ray exposure map。
Extraction gate：本机 41 个 central M31Center raw-ODF fields 的 nominal geometry 只到
a=12–16′ 完整。a=16–40′ 当前只能是 partial-footprint；不得命名或解释为 full annulus。下表不含 CCD gaps、GTI、source masks、vignetting 或 exposure，不能作 BACKSCAL / surface-brightness area。41 raw-ODF disk fields are all central；only OBSID 0112570101 currently has a direct dual-MOS clean-event seed。该图是 local-data planning/provenance product，不是 spectral fit 或 physical measurement。
| variable-W1 annulus | 41 local raw-ODF fields | existing 0112570101 clean seed |
|---|---|---|
| a=0–4′ | 100.000% | 100.000% |
| a=4–8′ | 100.000% | 100.000% |
| a=8–12′ | 100.000% | 100.000% |
| a=12–16′ | 100.000% | 91.917% |
| a=16–20′ | 82.418% | 52.437% |
| a=20–24′ | 73.004% | 38.162% |
| a=24–28′ | 56.119% | 25.905% |
| a=28–32′ | 36.150% | 17.779% |
| a=32–36′ | 24.621% | 11.750% |
| a=36–40′ | 13.636% | 5.838% |