Observation information
- date-obs: 2025-08-17
- time-obs: 07:31:20.166300000
- date-end: 2025-08-17
- time-end: 09:36:48.144600000
- obs_id: A14_002T06_9000006496
- exposure: 1586.57180101
- 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_53482cztM0_level2.fits
| modeM0/AS1A14_002T06_9000006496_53482cztM0_level2_quad_clean.evt
|
| Size (bytes) | 923,281,920 | 73,607,040 |
| Size | 880.5 MB
| 70.2 MB
|
| Events in quadrant A | 10,858,667 | 410,909 |
| Events in quadrant B | 4,541,485 | 652,687 |
| Events in quadrant C | 15,132,349 | 143,805 |
| Events in quadrant D | 3,140,350 | 566,351 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 36748 | 1 |
| B | 0 | 17846 | 1 |
| C | 0 | 49403 | 2 |
| D | 0 | 14070 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6513 | 2698 | 41.424843% |
| B | 6514 | 500 | 7.675775% |
| C | 6513 | 5167 | 79.333640% |
| D | 6513 | 87 | 1.335790% |
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 | 7528 | 6513 | 2534 | 2534 | 33.66% | 38.91% |  |
| B | 7529 | 6514 | 395 | 395 | 5.25% | 6.06% |  |
| C | 7527 | 6512 | 5152 | 5152 | 68.45% | 79.12% |  |
| D | 7528 | 6514 | 55 | 55 | 0.73% | 0.84% |  |
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 | 63 | 5276502 | 35338.6 | 603 | 590 | 149.3 |
| A | 15 | 174 | 1464456 | 9805.12 | 603 | 590 | 149.3 |
| A | 4 | 249 | 932365 | 6241.12 | 603 | 590 | 149.3 |
| B | 2 | 249 | 931317 | 6312.62 | 688 | 666 | 147.4 |
| B | 5 | 185 | 285513 | 1932.12 | 688 | 666 | 147.4 |
| B | 10 | 254 | 106296 | 716.49 | 688 | 666 | 147.4 |
| C | 7 | 64 | 7925209 | 76860.87 | 371 | 367 | 103.1 |
| C | 15 | 224 | 2509515 | 24335.54 | 371 | 367 | 103.1 |
| C | 1 | 241 | 2354831 | 22835.3 | 371 | 367 | 103.1 |
| D | 3 | 12 | 162275 | 829.9 | 690 | 660 | 194.7 |
| D | 2 | 120 | 100049 | 510.36 | 690 | 660 | 194.7 |
| D | 5 | 173 | 50974 | 258.36 | 690 | 660 | 194.7 |
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 |  |