Observation information
- date-obs: 2025-09-24
- time-obs: 11:47:59.371800000
- date-end: 2025-09-24
- time-end: 13:42:15.353700000
- obs_id: A14_041T01_9000006510
- exposure: 2755.47332543
- 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_54049cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54049cztM0_level2_quad_clean.evt
|
| Size (bytes) | 538,208,640 | 77,592,960 |
| Size | 513.3 MB
| 74.0 MB
|
| Events in quadrant A | 3,709,071 | 561,219 |
| Events in quadrant B | 3,144,368 | 612,391 |
| Events in quadrant C | 2,951,768 | 523,511 |
| Events in quadrant D | 9,662,139 | 243,433 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 120 | 0 |
| B | 0 | 120 | 0 |
| C | 0 | 120 | 0 |
| D | 0 | 120 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15212 | 1 |
| B | 0 | 13300 | 1 |
| C | 0 | 13208 | 1 |
| D | 0 | 32777 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5846 | 221 | 3.780363% |
| B | 5847 | 136 | 2.325979% |
| C | 5847 | 166 | 2.839063% |
| D | 5847 | 3241 | 55.430135% |
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 | 6856 | 5847 | 132 | 132 | 1.93% | 2.26% |  |
| B | 6857 | 5848 | 55 | 55 | 0.80% | 0.94% |  |
| C | 6857 | 5848 | 114 | 114 | 1.66% | 1.95% |  |
| D | 6856 | 5847 | 2400 | 2400 | 35.01% | 41.05% |  |
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 | 15 | 533931 | 3475.92 | 614 | 597 | 153.4 |
| A | 15 | 174 | 337832 | 2197.88 | 614 | 597 | 153.4 |
| A | 12 | 115 | 314807 | 2047.82 | 614 | 597 | 153.4 |
| B | 15 | 20 | 188224 | 1433.1 | 613 | 590 | 130.9 |
| B | 5 | 236 | 161427 | 1228.43 | 613 | 590 | 130.9 |
| B | 0 | 213 | 82495 | 625.57 | 613 | 590 | 130.9 |
| C | 4 | 5 | 307222 | 1863.6 | 596 | 590 | 164.5 |
| C | 13 | 3 | 81028 | 488.87 | 596 | 590 | 164.5 |
| C | 14 | 254 | 69814 | 420.72 | 596 | 590 | 164.5 |
| D | 8 | 176 | 7738531 | 70733.61 | 379 | 361 | 109.4 |
| D | 2 | 62 | 227931 | 2080.19 | 379 | 361 | 109.4 |
| D | 3 | 12 | 97410 | 887.11 | 379 | 361 | 109.4 |
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 |  |