Observation information
- date-obs: 2025-12-13
- time-obs: 23:35:49.927100000
- date-end: 2025-12-14
- time-end: 02:03:29.896500000
- obs_id: A14_009T01_9000006534
- exposure: 5992.39024752
- 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_55245cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55245cztM0_level2_quad_clean.evt
|
| Size (bytes) | 588,654,720 | 96,125,760 |
| Size | 561.4 MB
| 91.7 MB
|
| Events in quadrant A | 4,628,082 | 621,260 |
| Events in quadrant B | 3,178,752 | 688,215 |
| Events in quadrant C | 8,918,406 | 539,439 |
| Events in quadrant D | 4,525,137 | 576,451 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18827 | 2 |
| B | 0 | 14975 | 2 |
| C | 0 | 31388 | 2 |
| D | 0 | 18080 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6960 | 348 | 5.000000% |
| B | 6961 | 128 | 1.838816% |
| C | 6960 | 1246 | 17.902299% |
| D | 6960 | 179 | 2.571839% |
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 | 8860 | 6962 | 301 | 301 | 3.40% | 4.32% |  |
| B | 8861 | 6963 | 17 | 17 | 0.19% | 0.24% |  |
| C | 8860 | 6962 | 1251 | 1251 | 14.12% | 17.97% |  |
| D | 8860 | 6962 | 127 | 127 | 1.43% | 1.82% |  |
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 | 12 | 115 | 1596177 | 9229.61 | 716 | 697 | 172.9 |
| A | 0 | 8 | 67325 | 385.43 | 716 | 697 | 172.9 |
| A | 3 | 62 | 45128 | 257.03 | 716 | 697 | 172.9 |
| B | 5 | 185 | 129109 | 826.83 | 724 | 697 | 155.3 |
| B | 2 | 249 | 57073 | 363.0 | 724 | 697 | 155.3 |
| B | 5 | 172 | 46008 | 291.75 | 724 | 697 | 155.3 |
| C | 12 | 254 | 2308969 | 12391.32 | 676 | 671 | 186.3 |
| C | 9 | 38 | 2057416 | 11040.94 | 676 | 671 | 186.3 |
| C | 1 | 16 | 966130 | 5182.74 | 676 | 671 | 186.3 |
| D | 5 | 38 | 1000459 | 5035.88 | 701 | 671 | 198.5 |
| D | 11 | 129 | 181350 | 910.07 | 701 | 671 | 198.5 |
| D | 6 | 46 | 153878 | 771.7 | 701 | 671 | 198.5 |
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 |  |