Observation information
- date-obs: 2025-09-24
- time-obs: 18:18:16.313800000
- date-end: 2025-09-24
- time-end: 20:34:26.287400000
- obs_id: A14_041T01_9000006510
- exposure: 5135.62995601
- sourceid: 1ES 1927+654
- observer: savithri
- ra_pnt: 291.8314
- dec_pnt: 65.56506
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_041T01_9000006510_54053cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54053cztM0_level2_quad_clean.evt
|
| Size (bytes) | 544,800,960 | 92,448,000 |
| Size | 519.6 MB
| 88.2 MB
|
| Events in quadrant A | 4,283,040 | 611,599 |
| Events in quadrant B | 4,190,467 | 681,688 |
| Events in quadrant C | 3,285,300 | 606,250 |
| Events in quadrant D | 7,902,332 | 445,379 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17414 | 2 |
| B | 0 | 17232 | 2 |
| C | 0 | 14559 | 2 |
| D | 0 | 28103 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6513 | 332 | 5.097497% |
| B | 6512 | 212 | 3.255528% |
| C | 6512 | 88 | 1.351351% |
| D | 6512 | 1589 | 24.401106% |
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 | 7558 | 6514 | 289 | 289 | 3.82% | 4.44% |  |
| B | 7557 | 6513 | 82 | 82 | 1.09% | 1.26% |  |
| C | 7557 | 6512 | 71 | 71 | 0.94% | 1.09% |  |
| D | 7557 | 6513 | 1364 | 1364 | 18.05% | 20.94% |  |
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 | 478835 | 2875.81 | 672 | 654 | 166.3 |
| A | 5 | 243 | 349759 | 2099.54 | 672 | 654 | 166.3 |
| A | 12 | 15 | 334081 | 2005.25 | 672 | 654 | 166.3 |
| B | 15 | 20 | 614317 | 4285.55 | 682 | 658 | 143.2 |
| B | 5 | 236 | 244519 | 1703.03 | 682 | 658 | 143.2 |
| B | 10 | 247 | 223003 | 1552.77 | 682 | 658 | 143.2 |
| C | 13 | 3 | 204395 | 1092.8 | 678 | 671 | 186.4 |
| C | 12 | 2 | 105867 | 564.28 | 678 | 671 | 186.4 |
| C | 12 | 252 | 67335 | 357.59 | 678 | 671 | 186.4 |
| D | 2 | 165 | 4858709 | 28520.77 | 601 | 574 | 170.3 |
| D | 14 | 52 | 215484 | 1261.68 | 601 | 574 | 170.3 |
| D | 3 | 12 | 132917 | 776.95 | 601 | 574 | 170.3 |
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 |  |