Observation information
- date-obs: 2025-09-26
- time-obs: 08:51:32.960300000
- date-end: 2025-09-26
- time-end: 10:47:46.941300000
- obs_id: A14_041T01_9000006510
- exposure: 5083.97424662
- 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_54076cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54076cztM0_level2_quad_clean.evt
|
| Size (bytes) | 468,941,760 | 85,296,960 |
| Size | 447.2 MB
| 81.3 MB
|
| Events in quadrant A | 3,030,881 | 578,461 |
| Events in quadrant B | 3,091,976 | 627,509 |
| Events in quadrant C | 4,087,214 | 516,084 |
| Events in quadrant D | 6,672,639 | 433,358 |
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 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13470 | 1 |
| B | 0 | 13451 | 1 |
| C | 0 | 16645 | 1 |
| D | 0 | 24103 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6119 | 136 | 2.222585% |
| B | 6119 | 146 | 2.386011% |
| C | 6120 | 422 | 6.895425% |
| D | 6120 | 1128 | 18.431373% |
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 | 6974 | 6120 | 54 | 54 | 0.77% | 0.88% |  |
| B | 6974 | 6120 | 50 | 50 | 0.72% | 0.82% |  |
| C | 6975 | 6121 | 367 | 367 | 5.26% | 6.00% |  |
| D | 6975 | 6121 | 1095 | 1095 | 15.70% | 17.89% |  |
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 | 302620 | 1870.98 | 652 | 635 | 161.4 |
| A | 14 | 235 | 95313 | 586.59 | 652 | 635 | 161.4 |
| A | 0 | 8 | 16756 | 99.88 | 652 | 635 | 161.4 |
| B | 0 | 213 | 126440 | 906.17 | 644 | 623 | 138.8 |
| B | 4 | 81 | 83284 | 595.35 | 644 | 623 | 138.8 |
| B | 5 | 236 | 74818 | 534.37 | 644 | 623 | 138.8 |
| C | 15 | 233 | 929789 | 5479.97 | 616 | 609 | 169.6 |
| C | 9 | 38 | 204577 | 1202.93 | 616 | 609 | 169.6 |
| C | 15 | 147 | 120951 | 709.73 | 616 | 609 | 169.6 |
| D | 8 | 176 | 3574932 | 21786.44 | 572 | 546 | 164.1 |
| D | 2 | 172 | 461404 | 2809.0 | 572 | 546 | 164.1 |
| D | 3 | 12 | 105525 | 639.86 | 572 | 546 | 164.1 |
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 |  |