Observation information
- date-obs: 2025-08-14
- time-obs: 05:53:06.878900000
- date-end: 2025-08-14
- time-end: 08:46:27.852500000
- obs_id: A14_002T06_9000006496
- exposure: 5637.13894802
- 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_53436cztM0_level2.fits
| modeM0/AS1A14_002T06_9000006496_53436cztM0_level2_quad_clean.evt
|
| Size (bytes) | 940,930,560 | 117,864,000 |
| Size | 897.3 MB
| 112.4 MB
|
| Events in quadrant A | 6,804,801 | 796,030 |
| Events in quadrant B | 6,825,329 | 888,570 |
| Events in quadrant C | 14,051,093 | 517,886 |
| Events in quadrant D | 6,451,402 | 740,180 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 184 | 0 |
| B | 0 | 184 | 0 |
| C | 0 | 184 | 0 |
| D | 0 | 184 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26317 | 2 |
| B | 0 | 26447 | 2 |
| C | 0 | 47725 | 2 |
| D | 0 | 25308 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 9016 | 836 | 9.272405% |
| B | 9016 | 694 | 7.697427% |
| C | 9016 | 3592 | 39.840284% |
| D | 9016 | 500 | 5.545697% |
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 | 10401 | 9018 | 628 | 628 | 6.04% | 6.96% |  |
| B | 10401 | 9018 | 246 | 246 | 2.37% | 2.73% |  |
| C | 10401 | 9018 | 3337 | 3337 | 32.08% | 37.00% |  |
| D | 10401 | 9018 | 418 | 418 | 4.02% | 4.64% |  |
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 | 15 | 174 | 1275139 | 5365.41 | 961 | 935 | 237.5 |
| A | 3 | 63 | 1167925 | 4913.95 | 961 | 935 | 237.5 |
| A | 0 | 8 | 264281 | 1108.89 | 961 | 935 | 237.5 |
| B | 4 | 206 | 680033 | 3285.94 | 961 | 928 | 206.7 |
| B | 4 | 171 | 605486 | 2925.24 | 961 | 928 | 206.7 |
| B | 10 | 254 | 592657 | 2863.16 | 961 | 928 | 206.7 |
| C | 1 | 241 | 6431333 | 32013.24 | 732 | 726 | 200.9 |
| C | 15 | 224 | 3123863 | 15547.79 | 732 | 726 | 200.9 |
| C | 15 | 178 | 520213 | 2586.14 | 732 | 726 | 200.9 |
| D | 11 | 245 | 586674 | 2174.19 | 947 | 903 | 269.4 |
| D | 13 | 153 | 574530 | 2129.12 | 947 | 903 | 269.4 |
| D | 2 | 153 | 233675 | 863.97 | 947 | 903 | 269.4 |
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 |  |