Observation information
- date-obs: 2025-09-26
- time-obs: 20:43:15.850900000
- date-end: 2025-09-26
- time-end: 22:52:31.832400000
- obs_id: A14_041T01_9000006510
- exposure: 6893.03462279
- 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_54084cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54084cztM0_level2_quad_clean.evt
|
| Size (bytes) | 500,143,680 | 106,963,200 |
| Size | 477.0 MB
| 102.0 MB
|
| Events in quadrant A | 3,650,518 | 706,512 |
| Events in quadrant B | 4,110,561 | 756,430 |
| Events in quadrant C | 4,052,968 | 665,655 |
| Events in quadrant D | 6,117,243 | 589,100 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16638 | 2 |
| B | 0 | 17785 | 2 |
| C | 0 | 17679 | 2 |
| D | 0 | 23335 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7492 | 145 | 1.935398% |
| B | 7492 | 305 | 4.071009% |
| C | 7492 | 220 | 2.936466% |
| D | 7492 | 626 | 8.355579% |
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 | 7717 | 7495 | 74 | 74 | 0.96% | 0.99% |  |
| B | 7717 | 7495 | 120 | 120 | 1.56% | 1.60% |  |
| C | 7717 | 7495 | 130 | 130 | 1.68% | 1.73% |  |
| D | 7717 | 7495 | 479 | 479 | 6.21% | 6.39% |  |
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 | 404596 | 2036.5 | 798 | 775 | 198.3 |
| A | 12 | 15 | 39455 | 195.07 | 798 | 775 | 198.3 |
| A | 1 | 7 | 21807 | 106.07 | 798 | 775 | 198.3 |
| B | 5 | 236 | 217172 | 1285.4 | 793 | 762 | 168.4 |
| B | 7 | 252 | 198425 | 1174.05 | 793 | 762 | 168.4 |
| B | 5 | 185 | 193204 | 1143.04 | 793 | 762 | 168.4 |
| C | 13 | 3 | 349181 | 1643.86 | 778 | 769 | 211.9 |
| C | 15 | 233 | 176604 | 829.61 | 778 | 769 | 211.9 |
| C | 12 | 249 | 104425 | 489.06 | 778 | 769 | 211.9 |
| D | 8 | 176 | 1553241 | 7332.84 | 748 | 715 | 211.7 |
| D | 2 | 172 | 695550 | 3281.82 | 748 | 715 | 211.7 |
| D | 10 | 199 | 323356 | 1523.89 | 748 | 715 | 211.7 |
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 |  |