Observation information
- date-obs: 2025-09-27
- time-obs: 15:57:11.673700000
- date-end: 2025-09-27
- time-end: 17:58:31.656800000
- obs_id: A14_041T01_9000006510
- exposure: 5016.75513756
- 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_54096cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54096cztM0_level2_quad_clean.evt
|
| Size (bytes) | 496,425,600 | 90,135,360 |
| Size | 473.4 MB
| 86.0 MB
|
| Events in quadrant A | 3,158,373 | 611,582 |
| Events in quadrant B | 4,233,924 | 656,478 |
| Events in quadrant C | 3,374,360 | 579,113 |
| Events in quadrant D | 7,127,570 | 448,668 |
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 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13989 | 1 |
| B | 0 | 16857 | 1 |
| C | 0 | 14489 | 1 |
| D | 0 | 25447 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6200 | 141 | 2.274194% |
| B | 6200 | 205 | 3.306452% |
| C | 6200 | 164 | 2.645161% |
| D | 6201 | 1360 | 21.931946% |
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 | 7280 | 6201 | 70 | 70 | 0.96% | 1.13% |  |
| B | 7280 | 6201 | 79 | 79 | 1.09% | 1.27% |  |
| C | 7280 | 6201 | 85 | 85 | 1.17% | 1.37% |  |
| D | 7281 | 6202 | 1054 | 1054 | 14.48% | 16.99% |  |
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 | 0 | 8 | 237537 | 1442.94 | 660 | 645 | 164.2 |
| A | 12 | 115 | 123725 | 749.7 | 660 | 645 | 164.2 |
| A | 15 | 174 | 73051 | 441.04 | 660 | 645 | 164.2 |
| B | 15 | 20 | 978139 | 7054.74 | 656 | 634 | 138.6 |
| B | 5 | 236 | 202607 | 1457.66 | 656 | 634 | 138.6 |
| B | 7 | 252 | 82588 | 591.47 | 656 | 634 | 138.6 |
| C | 13 | 3 | 325896 | 1797.94 | 653 | 647 | 180.9 |
| C | 1 | 16 | 104166 | 572.24 | 653 | 647 | 180.9 |
| C | 15 | 147 | 72620 | 397.86 | 653 | 647 | 180.9 |
| D | 15 | 78 | 3232408 | 19375.72 | 584 | 556 | 166.8 |
| D | 8 | 176 | 757716 | 4539.35 | 584 | 556 | 166.8 |
| D | 3 | 12 | 384367 | 2301.04 | 584 | 556 | 166.8 |
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 |  |