Observation information
- date-obs: 2025-09-23
- time-obs: 19:44:56.517800000
- date-end: 2025-09-23
- time-end: 22:02:33.497500000
- obs_id: A14_041T01_9000006510
- exposure: 3853.07707572
- 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_54039cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54039cztM0_level2_quad_clean.evt
|
| Size (bytes) | 628,104,960 | 89,556,480 |
| Size | 599.0 MB
| 85.4 MB
|
| Events in quadrant A | 4,439,827 | 610,837 |
| Events in quadrant B | 3,540,918 | 701,363 |
| Events in quadrant C | 4,035,919 | 600,359 |
| Events in quadrant D | 10,708,851 | 328,141 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18253 | 2 |
| B | 0 | 15649 | 2 |
| C | 0 | 17121 | 2 |
| D | 0 | 36512 | 6 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6752 | 481 | 7.123815% |
| B | 6752 | 170 | 2.517773% |
| C | 6752 | 340 | 5.035545% |
| D | 6751 | 3030 | 44.882240% |
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 | 7707 | 6753 | 441 | 441 | 5.72% | 6.53% |  |
| B | 7707 | 6753 | 91 | 91 | 1.18% | 1.35% |  |
| C | 7707 | 6753 | 304 | 304 | 3.94% | 4.50% |  |
| D | 7705 | 6750 | 2821 | 2821 | 36.61% | 41.79% |  |
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 | 986308 | 5839.36 | 684 | 666 | 168.8 |
| A | 15 | 174 | 581689 | 3442.23 | 684 | 666 | 168.8 |
| A | 0 | 8 | 90643 | 533.06 | 684 | 666 | 168.8 |
| B | 5 | 185 | 207621 | 1390.07 | 701 | 676 | 148.9 |
| B | 0 | 213 | 160447 | 1073.2 | 701 | 676 | 148.9 |
| B | 4 | 171 | 129332 | 864.2 | 701 | 676 | 148.9 |
| C | 15 | 147 | 902791 | 4840.3 | 677 | 671 | 186.4 |
| C | 13 | 3 | 128615 | 686.48 | 677 | 671 | 186.4 |
| C | 14 | 254 | 107548 | 573.44 | 677 | 671 | 186.4 |
| D | 8 | 176 | 6359149 | 45954.77 | 483 | 461 | 138.4 |
| D | 7 | 70 | 1810389 | 13080.5 | 483 | 461 | 138.4 |
| D | 3 | 12 | 278220 | 2007.39 | 483 | 461 | 138.4 |
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 |  |