Observation information
- date-obs: 2025-09-25
- time-obs: 20:23:16.757200000
- date-end: 2025-09-25
- time-end: 22:36:08.044700000
- obs_id: A14_041T01_9000006510
- exposure: 6218.41452044
- 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_54069cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54069cztM0_level2_quad_clean.evt
|
| Size (bytes) | 537,059,520 | 101,226,240 |
| Size | 512.2 MB
| 96.5 MB
|
| Events in quadrant A | 3,723,044 | 682,503 |
| Events in quadrant B | 4,090,909 | 735,627 |
| Events in quadrant C | 6,435,944 | 567,983 |
| Events in quadrant D | 5,071,260 | 577,358 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16455 | 3 |
| B | 0 | 17385 | 3 |
| C | 0 | 24240 | 3 |
| D | 0 | 20370 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7194 | 114 | 1.584654% |
| B | 7194 | 222 | 3.085905% |
| C | 7193 | 1029 | 14.305575% |
| D | 7193 | 481 | 6.687057% |
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 | 7684 | 7195 | 68 | 68 | 0.88% | 0.95% |  |
| B | 7684 | 7194 | 103 | 103 | 1.34% | 1.43% |  |
| C | 7683 | 7194 | 971 | 971 | 12.64% | 13.50% |  |
| D | 7683 | 7195 | 439 | 439 | 5.71% | 6.10% |  |
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 | 309105 | 1649.49 | 753 | 735 | 186.9 |
| A | 12 | 115 | 214262 | 1142.17 | 753 | 735 | 186.9 |
| A | 4 | 3 | 67478 | 357.01 | 753 | 735 | 186.9 |
| B | 5 | 236 | 426401 | 2649.83 | 754 | 728 | 160.6 |
| B | 7 | 252 | 198531 | 1231.33 | 754 | 728 | 160.6 |
| B | 15 | 20 | 149261 | 924.62 | 754 | 728 | 160.6 |
| C | 15 | 233 | 2508624 | 13394.15 | 678 | 672 | 187.2 |
| C | 4 | 5 | 846703 | 4518.37 | 678 | 672 | 187.2 |
| C | 13 | 3 | 177038 | 941.91 | 678 | 672 | 187.2 |
| D | 8 | 176 | 929698 | 4580.9 | 716 | 683 | 202.8 |
| D | 2 | 172 | 353069 | 1737.59 | 716 | 683 | 202.8 |
| D | 14 | 20 | 324542 | 1596.92 | 716 | 683 | 202.8 |
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 |  |