Observation information
- date-obs: 2025-12-23
- time-obs: 21:18:40.712100000
- date-end: 2025-12-23
- time-end: 23:40:14.041800000
- obs_id: A14_009T01_9000006534
- exposure: 7487.45907795
- sourceid: M31N 2008-12a
- observer: Judhajeet
- ra_pnt: 11.37
- dec_pnt: 41.90281
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_009T01_9000006534_55392cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55392cztM0_level2_quad_clean.evt
|
| Size (bytes) | 537,206,400 | 115,836,480 |
| Size | 512.3 MB
| 110.5 MB
|
| Events in quadrant A | 4,155,536 | 753,713 |
| Events in quadrant B | 3,715,937 | 812,795 |
| Events in quadrant C | 4,697,622 | 731,049 |
| Events in quadrant D | 6,693,326 | 651,766 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18410 | 1 |
| B | 0 | 17108 | 1 |
| C | 0 | 19288 | 1 |
| D | 0 | 25679 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5 | 0 |
| B | 0 | 5 | 0 |
| C | 0 | 5 | 0 |
| D | 0 | 5 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8029 | 117 | 1.457218% |
| B | 8030 | 58 | 0.722291% |
| C | 8030 | 42 | 0.523039% |
| D | 8030 | 629 | 7.833126% |
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 | 8494 | 8030 | 79 | 79 | 0.93% | 0.98% |  |
| B | 8495 | 8031 | 13 | 13 | 0.15% | 0.16% |  |
| C | 8495 | 8031 | 17 | 17 | 0.20% | 0.21% |  |
| D | 8495 | 8031 | 634 | 634 | 7.46% | 7.89% |  |
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 | 4 | 159 | 649598 | 3025.15 | 863 | 840 | 214.5 |
| A | 4 | 3 | 34317 | 156.1 | 863 | 840 | 214.5 |
| A | 3 | 60 | 30456 | 138.1 | 863 | 840 | 214.5 |
| B | 5 | 185 | 80476 | 434.06 | 857 | 826 | 183.5 |
| B | 5 | 236 | 67619 | 364.0 | 857 | 826 | 183.5 |
| B | 0 | 199 | 51006 | 273.46 | 857 | 826 | 183.5 |
| C | 9 | 38 | 1150114 | 4929.53 | 850 | 841 | 233.1 |
| C | 12 | 249 | 112613 | 479.42 | 850 | 841 | 233.1 |
| C | 15 | 178 | 32451 | 135.58 | 850 | 841 | 233.1 |
| D | 11 | 129 | 2199629 | 9394.01 | 828 | 791 | 234.1 |
| D | 2 | 249 | 429974 | 1833.58 | 828 | 791 | 234.1 |
| D | 15 | 27 | 290589 | 1238.09 | 828 | 791 | 234.1 |
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 |  |