Observation information
- date-obs: 2025-08-16
- time-obs: 20:58:38.271200000
- date-end: 2025-08-16
- time-end: 23:11:51.250400000
- obs_id: A14_002T06_9000006496
- exposure: 3275.16014266
- sourceid: M31 Field No. 8
- observer: dleahy
- ra_pnt: 11.36333
- dec_pnt: 41.88303
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_002T06_9000006496_53475cztM0_level2.fits
| modeM0/AS1A14_002T06_9000006496_53475cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,013,253,120 | 96,514,560 |
| Size | 966.3 MB
| 92.0 MB
|
| Events in quadrant A | 12,848,501 | 525,497 |
| Events in quadrant B | 4,355,348 | 845,490 |
| Events in quadrant C | 15,488,287 | 305,351 |
| Events in quadrant D | 4,196,777 | 690,016 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 160 | 0 |
| B | 0 | 160 | 0 |
| C | 0 | 160 | 0 |
| D | 0 | 160 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 43733 | 0 |
| B | 0 | 18625 | 0 |
| C | 0 | 51456 | 3 |
| D | 0 | 18453 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7993 | 3125 | 39.096710% |
| B | 7993 | 129 | 1.613912% |
| C | 7993 | 5015 | 62.742400% |
| D | 7993 | 103 | 1.288628% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 7993 | 7993 | 2715 | 2715 | 33.97% | 33.97% |  |
| B | 7993 | 7993 | 76 | 76 | 0.95% | 0.95% |  |
| C | 7993 | 7993 | 4575 | 4575 | 57.24% | 57.24% |  |
| D | 7993 | 7993 | 93 | 93 | 1.16% | 1.16% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 3 | 62 | 3925983 | 21474.04 | 743 | 724 | 182.8 |
| A | 3 | 63 | 2916564 | 15951.78 | 743 | 724 | 182.8 |
| A | 15 | 174 | 2835194 | 15506.62 | 743 | 724 | 182.8 |
| B | 2 | 249 | 253761 | 1353.87 | 875 | 844 | 186.8 |
| B | 10 | 28 | 200104 | 1066.65 | 875 | 844 | 186.8 |
| B | 15 | 20 | 116022 | 616.55 | 875 | 844 | 186.8 |
| C | 15 | 224 | 4508703 | 29286.69 | 562 | 556 | 153.9 |
| C | 1 | 241 | 3629082 | 23572.32 | 562 | 556 | 153.9 |
| C | 7 | 64 | 2131510 | 13843.51 | 562 | 556 | 153.9 |
| D | 2 | 120 | 226026 | 947.99 | 851 | 816 | 237.6 |
| D | 3 | 12 | 137034 | 573.39 | 851 | 816 | 237.6 |
| D | 15 | 42 | 97115 | 405.36 | 851 | 816 | 237.6 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |