Observation information
- date-obs: 2025-09-27
- time-obs: 17:36:57.659700000
- date-end: 2025-09-27
- time-end: 19:43:14.640400000
- obs_id: A14_041T01_9000006510
- exposure: 5919.01420987
- 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_54097cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54097cztM0_level2_quad_clean.evt
|
| Size (bytes) | 529,951,680 | 93,862,080 |
| Size | 505.4 MB
| 89.5 MB
|
| Events in quadrant A | 3,925,740 | 630,527 |
| Events in quadrant B | 5,555,562 | 632,325 |
| Events in quadrant C | 3,438,318 | 600,908 |
| Events in quadrant D | 6,183,233 | 516,921 |
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 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16567 | 1 |
| B | 0 | 21282 | 1 |
| C | 0 | 15118 | 2 |
| D | 0 | 23044 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6622 | 219 | 3.307158% |
| B | 6622 | 757 | 11.431592% |
| C | 6621 | 152 | 2.295726% |
| D | 6622 | 824 | 12.443371% |
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 | 7577 | 6623 | 197 | 197 | 2.60% | 2.97% |  |
| B | 7577 | 6623 | 567 | 567 | 7.48% | 8.56% |  |
| C | 7576 | 6622 | 108 | 108 | 1.43% | 1.63% |  |
| D | 7577 | 6623 | 663 | 663 | 8.75% | 10.01% |  |
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 | 115 | 616427 | 3576.31 | 690 | 673 | 172.2 |
| A | 15 | 174 | 273191 | 1582.79 | 690 | 673 | 172.2 |
| A | 0 | 8 | 109347 | 631.18 | 690 | 673 | 172.2 |
| B | 5 | 250 | 1750371 | 12320.28 | 669 | 647 | 142.0 |
| B | 15 | 20 | 252499 | 1773.36 | 669 | 647 | 142.0 |
| B | 0 | 213 | 203585 | 1428.94 | 669 | 647 | 142.0 |
| C | 13 | 3 | 197392 | 1040.18 | 681 | 672 | 189.1 |
| C | 1 | 241 | 141101 | 742.54 | 681 | 672 | 189.1 |
| C | 1 | 16 | 138779 | 730.26 | 681 | 672 | 189.1 |
| D | 15 | 78 | 2175785 | 11783.09 | 643 | 613 | 184.6 |
| D | 8 | 176 | 667678 | 3613.55 | 643 | 613 | 184.6 |
| D | 3 | 12 | 219098 | 1183.55 | 643 | 613 | 184.6 |
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 |  |