Observation information
- date-obs: 2025-09-19
- time-obs: 20:33:00.354000000
- date-end: 2025-09-19
- time-end: 22:37:00.337100000
- obs_id: A14_041T01_9000006510
- exposure: 4029.19744813
- 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_53980cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_53980cztM0_level2_quad_clean.evt
|
| Size (bytes) | 624,225,600 | 85,700,160 |
| Size | 595.3 MB
| 81.7 MB
|
| Events in quadrant A | 3,319,048 | 608,440 |
| Events in quadrant B | 3,795,469 | 664,675 |
| Events in quadrant C | 5,602,016 | 534,999 |
| Events in quadrant D | 9,901,263 | 346,618 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14548 | 1 |
| B | 0 | 15688 | 1 |
| C | 0 | 21113 | 1 |
| D | 0 | 33858 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6300 | 130 | 2.063492% |
| B | 6300 | 183 | 2.904762% |
| C | 6300 | 791 | 12.555556% |
| D | 6300 | 2484 | 39.428571% |
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 | 7440 | 6301 | 85 | 85 | 1.14% | 1.35% |  |
| B | 7440 | 6301 | 109 | 109 | 1.47% | 1.73% |  |
| C | 7440 | 6301 | 747 | 747 | 10.04% | 11.86% |  |
| D | 7440 | 6300 | 2364 | 2364 | 31.77% | 37.52% |  |
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 | 465705 | 2889.61 | 649 | 634 | 160.9 |
| A | 10 | 253 | 62087 | 381.82 | 649 | 634 | 160.9 |
| A | 7 | 14 | 48148 | 295.22 | 649 | 634 | 160.9 |
| B | 5 | 185 | 406268 | 2940.36 | 654 | 633 | 138.0 |
| B | 5 | 250 | 334583 | 2420.73 | 654 | 633 | 138.0 |
| B | 0 | 213 | 128285 | 925.32 | 654 | 633 | 138.0 |
| C | 1 | 241 | 2214999 | 13049.43 | 616 | 610 | 169.7 |
| C | 12 | 249 | 445112 | 2619.46 | 616 | 610 | 169.7 |
| C | 12 | 2 | 163782 | 961.58 | 616 | 610 | 169.7 |
| D | 8 | 176 | 6870143 | 46756.26 | 502 | 478 | 146.9 |
| D | 2 | 172 | 463355 | 3150.43 | 502 | 478 | 146.9 |
| D | 6 | 239 | 346796 | 2357.1 | 502 | 478 | 146.9 |
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 |  |