M31 variable-W1 MOS annuli · technical visual QA

validated product snapshot

三个相邻 annuli，六套 MOS spectra

谱图均来自 xsherpa.inspect.SpectrumInspector 的无拟合 inspection。每个 annulus 保留 MOS1/MOS2 的独立 response 和 QPB；页面中的 XMM images 用于 spatial QA，不作 exposure-corrected 或 band-defined flux image。

3pure variable-W1 annuli

6MOS source/QPB/RMF/ARF sets

230,840validated source counts (MOS1+MOS2)

0fits / physical claims in this report

解释边界：stored spectra span 0.3–7.2 keV；未来 MOS fitting 必须 exclude 1.4–2.0 keV。当前 obj-image-sky.fits 未带 PIMIN/PIMAX，所以图像仅检查 region/mask registration。

空间 QA reference：橙色为 a=8–12′，灰色虚线为另外两个 report annuli。各 region card 下方的 image 会单独 highlight 对应 annulus，并使用该 extraction 的 camera-specific mask files。

region-by-region inspection

每个 region：谱 + image + exact shape

点击 figure 可放大。每张谱图右上按钮可在 sb_flux、sb、rate 三种 xsherpa inspection units 间切换。

E009; 84/84 technical gates PASS

a=0–4′ · 中心 variable-W1 annulus

xsherpa inspection spectrum

MOS1/MOS2 independently shown; 0.3–7.2 keV; group_subtracted_oversampling_SNR(rate=5,S/N=6); no fit/model curve.

Extraction image + exact region shape

Color fill is the report region; red/yellow circles are its camera-specific 80%-EEF point-source exclusions. This counts coadd is spatial QA only.

Validated product summary (0.3–7.2 keV extraction products)
Camera	Source counts	Particle QPB counts	Exposure (ks)	BACKSCAL area (arcmin²)
MOS1	60,244	1,096.727	58.180	28.882
MOS2	61,552	1,147.417	59.012	28.785

E011; 86/86 technical gates PASS

a=4–8′ · 内侧 variable-W1 annulus

xsherpa inspection spectrum

MOS1/MOS2 independently shown; 0.3–7.2 keV; group_subtracted_oversampling_SNR(rate=5,S/N=6); no fit/model curve.

Extraction image + exact region shape

Color fill is the report region; red/yellow circles are its camera-specific 80%-EEF point-source exclusions. This counts coadd is spatial QA only.

Validated product summary (0.3–7.2 keV extraction products)
Camera	Source counts	Particle QPB counts	Exposure (ks)	BACKSCAL area (arcmin²)
MOS1	32,502	2,755.879	58.184	70.240
MOS2	35,879	2,932.051	59.021	71.977

E011; 86/86 technical gates PASS

a=8–12′ · 外侧 variable-W1 annulus

xsherpa inspection spectrum

MOS1/MOS2 independently shown; 0.3–7.2 keV; group_subtracted_oversampling_SNR(rate=5,S/N=6); no fit/model curve.

Extraction image + exact region shape

Color fill is the report region; red/yellow circles are its camera-specific 80%-EEF point-source exclusions. This counts coadd is spatial QA only.

Validated product summary (0.3–7.2 keV extraction products)
Camera	Source counts	Particle QPB counts	Exposure (ks)	BACKSCAL area (arcmin²)
MOS1	20,511	4,381.942	58.197	106.520
MOS2	20,152	4,187.877	59.054	104.415

provenance & limits

方法、QA、下一步

已验证

所有 extraction products 都包含 same-region source PHA、particle-QPB PHA、RMF、ARF 与 OGIP links。
a=0–4′ 的 E009 technical gates 为 84/84 PASS；a=4–8′ 与 a=8–12′ 的 E011 gates 各为 86/86 PASS。
DS9 geometry 直接解析：中心 region 为 120-vertex include polygon；外环为 120-vertex outer minus 120-vertex inner polygon。
MOS coadd 前要求 image shape 及完整 WCS 精确一致；point masks 要求 MOS1=92、MOS2=90 个 !CIRCLE rows。

尚未完成

未建立 astrophysical sky background model；QPB 不能替代 LHB/MW halo/CXB 等成分。
未拟合 thermal model，因此不报告 temperature、metallicity、flux 或 radial trend。
一条 central pointing 不构成完整 0–40′ radial program，也不支持 morphology/physical-origin claim。
下一科学步骤是定义 sky-background + fitting scope，再评估是否可解释 0.6–0.8 keV emission。