Observation information
- date-obs: 2025-12-18
- time-obs: 23:13:16.019500000
- date-end: 2025-12-19
- time-end: 01:49:54.970700000
- obs_id: A14_009T01_9000006534
- exposure: 8292.71543443
- 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_55319cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55319cztM0_level2_quad_clean.evt
|
| Size (bytes) | 560,658,240 | 108,299,520 |
| Size | 534.7 MB
| 103.3 MB
|
| Events in quadrant A | 5,910,861 | 680,488 |
| Events in quadrant B | 4,036,286 | 746,950 |
| Events in quadrant C | 4,451,656 | 657,458 |
| Events in quadrant D | 5,699,693 | 607,460 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 172 | 0 |
| B | 0 | 172 | 0 |
| C | 0 | 172 | 0 |
| D | 0 | 172 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23440 | 2 |
| B | 0 | 18566 | 2 |
| C | 0 | 19704 | 2 |
| D | 0 | 22987 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8439 | 412 | 4.882095% |
| B | 8440 | 197 | 2.334123% |
| C | 8440 | 180 | 2.132701% |
| D | 8440 | 345 | 4.087678% |
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 | 9398 | 8713 | 311 | 311 | 3.31% | 3.57% |  |
| B | 9399 | 8714 | 49 | 49 | 0.52% | 0.56% |  |
| C | 9399 | 8716 | 136 | 136 | 1.45% | 1.56% |  |
| D | 9399 | 8714 | 332 | 332 | 3.53% | 3.81% |  |
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 | 78 | 1160344 | 5303.87 | 893 | 869 | 218.6 |
| A | 0 | 8 | 521240 | 2380.37 | 893 | 869 | 218.6 |
| A | 3 | 14 | 375763 | 1714.9 | 893 | 869 | 218.6 |
| B | 2 | 249 | 163295 | 853.23 | 897 | 863 | 190.4 |
| B | 0 | 199 | 133204 | 695.16 | 897 | 863 | 190.4 |
| B | 7 | 252 | 103542 | 539.36 | 897 | 863 | 190.4 |
| C | 6 | 223 | 328974 | 1353.47 | 887 | 879 | 242.4 |
| C | 13 | 3 | 291777 | 1200.03 | 887 | 879 | 242.4 |
| C | 12 | 241 | 99884 | 408.42 | 887 | 879 | 242.4 |
| D | 8 | 160 | 1022698 | 4142.45 | 877 | 841 | 246.7 |
| D | 11 | 129 | 531400 | 2150.81 | 877 | 841 | 246.7 |
| D | 3 | 12 | 122365 | 492.64 | 877 | 841 | 246.7 |
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 |  |