M104 R4–7 Four-Sector Production ESAS and v22 Fit Summary
Production extraction qualification
The final extraction used the specified esas_playground_v1.4.1.py pipeline with a project-local, explicitly resolved mos-spectra wrapper. Each qualified combination contains a region-specific source PHA, real mos_back QPB PHA, ARF, and RMF.
Physical-label correction (2026-07-10): the historical Angle* basenames record DS9 pie angles, which are measured from the image x-axis. They are not celestial position angles. On this WCS, sky PA = (DS9 angle - 90 deg) mod 360. The spectra and extraction geometry are unchanged; only the physical disk/wind labels below were corrected and verified against the WCS centroids of the actual ESAS source images.
| Sector | Instrument | Source counts | QPB counts | CCDs | Qualification |
|---|---|---|---|---|---|
| Disk W (DS9 −45–45°; sky PA 225–315°) | MOS1 | — | — | CCD1 only | Unavailable: no outer corner anchor |
| MOS2 | 8,837 | 3,547.49 | 1, 6 | Qualified | |
| Wind N (DS9 45–135°; sky PA 315–45°) | MOS1 | — | — | CCD1 only | Unavailable: no outer corner anchor |
| MOS2 | 6,277 | 3,383.36 | 1, 4, 5 | Qualified | |
| Disk E (DS9 135–225°; sky PA 45–135°) | MOS1 | 5,285 | 2,605.90 | 1, 2 | Qualified |
| MOS2 | 6,385 | 3,473.78 | 1, 3, 4 | Qualified | |
| Wind S (DS9 225–315°; sky PA 135–225°) | MOS1 | 8,205 | 3,303.69 | 1, 7 | Qualified |
| MOS2 | 8,042 | 3,405.32 | 1, 3 | Qualified |
Final qualification: 6/8 instrument-sector combinations, with 6 real mos_back products. The unavailable combinations are MOS1 Disk W and MOS1 Wind N; each contains only CCD1 within the exact sector footprint and has no outer exposed-corner anchor.
Manifest:
/u/Lang3/Data/XARTATOMS/XMM/ODF/0900170101/rpc/production_regions/R4-7_four_independent_90deg_sectors/r47_four_sector_final_production_qualification_manifest.csv
v22 fitting configuration
FAST_MODE=1SP_SHAPE_MODE=r0_15_full_frozenCXB_NORM_FREE=1- CXB photon index fixed at 1.46
MOS_INSTLINE3_ZERO=1MOS_IGNORE_BAND=1.15-1.45keV- Source fitting interval: 0.4–3.2 keV, excluding the MOS ignored band
- Statistic:
chi2gehrels
Best-fit results
| Sector | Source spectra | kT (keV) | Reduced statistic | q-value | Free CXB norm |
|---|---|---|---|---|---|
| Disk W | 1 (MOS2) | 0.706 | 0.65 | 0.946 | 0.002582 |
| Wind N | 1 (MOS2) | 0.780 | 1.35 | 0.168 | 0.002480 |
| Disk E | 2 (MOS1+MOS2) | 0.677 | 1.60 | 0.017 | 0.002576 |
| Wind S | 2 (MOS1+MOS2) | 0.760 | 0.90 | 0.695 | 0.003603 |
The arithmetic mean of the two disk best fits is 0.692 keV, compared with 0.770 keV for the two wind best fits: a +0.079 keV (+11.36%) wind-minus-disk offset. This is descriptive only because FAST mode did not compute confidence intervals.
Disk E fails the nominal q-value quality threshold. Its spectrum atlas shows instrument-dependent low-energy residual structure: MOS1 is preferentially positive while MOS2 is preferentially negative below about 1.1 keV. The Disk E temperature must therefore be treated as provisional rather than as evidence for a secure wind/disk contrast.
Deliverables
- Fit summary CSV:
/u/Lang3/program/XARTATOMS/joint_spectrum_fitting_2T_basedon_region_v22/spR015full_cxbNormFree_noMOSL3_mosIgn115-145_r47_four_sector_fast_summary_20260710T172212Z.csv - Figure directory (1-column and 2-column PNG/PDF):
/u/Lang3/program/XARTATOMS/figure/r47_four_sector_v22_final_production/ - Plot generator:
/u/Lang3/program/XARTATOMS/make_r47_four_sector_v22_comparison_and_spectrum_atlas.py - Extraction logs:
/u/Lang3/Data/XARTATOMS/XMM/ODF/0900170101/rpc/production_regions/R4-7_four_independent_90deg_sectors/run_esas_r47_final_production_pilot_mos1_windS_20260710T161157Z.log(the historical filename contains the pre-correction label; this is physically Disk E) and/u/Lang3/Data/XARTATOMS/XMM/ODF/0900170101/rpc/production_regions/R4-7_four_independent_90deg_sectors/run_esas_r47_final_remaining_five_products_20260710T162801Z.log