Observation information
- date-obs: 2025-09-25
- time-obs: 10:08:15.169100000
- date-end: 2025-09-25
- time-end: 12:17:10.149200000
- obs_id: A14_041T01_9000006510
- exposure: 5638.92332435
- 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_54063cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54063cztM0_level2_quad_clean.evt
|
| Size (bytes) | 642,343,680 | 94,106,880 |
| Size | 612.6 MB
| 89.7 MB
|
| Events in quadrant A | 3,801,175 | 639,625 |
| Events in quadrant B | 8,405,803 | 603,764 |
| Events in quadrant C | 3,597,454 | 609,330 |
| Events in quadrant D | 7,445,821 | 521,842 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16138 | 1 |
| B | 0 | 29687 | 1 |
| C | 0 | 15763 | 2 |
| D | 0 | 26883 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6805 | 292 | 4.290963% |
| B | 6806 | 1435 | 21.084337% |
| C | 6805 | 115 | 1.689934% |
| D | 6805 | 842 | 12.373255% |
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 | 7735 | 6805 | 181 | 181 | 2.34% | 2.66% |  |
| B | 7736 | 6806 | 1181 | 1181 | 15.27% | 17.35% |  |
| C | 7735 | 6805 | 44 | 44 | 0.57% | 0.65% |  |
| D | 7735 | 6805 | 820 | 820 | 10.60% | 12.05% |  |
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 | 15 | 174 | 885258 | 4900.1 | 724 | 702 | 180.5 |
| A | 3 | 14 | 32690 | 177.2 | 724 | 702 | 180.5 |
| A | 4 | 3 | 24839 | 133.71 | 724 | 702 | 180.5 |
| B | 15 | 20 | 4384146 | 29948.33 | 691 | 667 | 146.4 |
| B | 4 | 81 | 900974 | 6150.98 | 691 | 667 | 146.4 |
| B | 0 | 213 | 133628 | 908.4 | 691 | 667 | 146.4 |
| C | 9 | 53 | 394090 | 2056.93 | 702 | 694 | 191.3 |
| C | 12 | 2 | 86473 | 448.51 | 702 | 694 | 191.3 |
| C | 9 | 38 | 83408 | 432.48 | 702 | 694 | 191.3 |
| D | 10 | 172 | 3228306 | 16607.13 | 677 | 645 | 194.4 |
| D | 8 | 176 | 426097 | 2189.06 | 677 | 645 | 194.4 |
| D | 14 | 20 | 324792 | 1667.82 | 677 | 645 | 194.4 |
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 |  |