Observation information
- date-obs: 2025-09-26
- time-obs: 22:22:48.836600000
- date-end: 2025-09-27
- time-end: 00:39:55.816900000
- obs_id: A14_041T01_9000006510
- exposure: 7572.73939407
- 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_54085cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54085cztM0_level2_quad_clean.evt
|
| Size (bytes) | 523,872,000 | 114,166,080 |
| Size | 499.6 MB
| 108.9 MB
|
| Events in quadrant A | 4,297,237 | 735,966 |
| Events in quadrant B | 4,083,953 | 811,507 |
| Events in quadrant C | 4,207,506 | 712,604 |
| Events in quadrant D | 6,180,350 | 639,720 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 164 | 0 |
| B | 0 | 164 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19014 | 1 |
| B | 0 | 18161 | 1 |
| C | 0 | 18397 | 1 |
| D | 0 | 24122 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8017 | 281 | 3.505052% |
| B | 8017 | 190 | 2.369964% |
| C | 8016 | 150 | 1.871257% |
| D | 8017 | 473 | 5.899963% |
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 | 8227 | 8019 | 188 | 188 | 2.29% | 2.34% |  |
| B | 8227 | 8019 | 99 | 99 | 1.20% | 1.23% |  |
| C | 8226 | 8018 | 111 | 111 | 1.35% | 1.38% |  |
| D | 8227 | 8019 | 420 | 420 | 5.11% | 5.24% |  |
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 | 860749 | 4183.46 | 834 | 811 | 205.6 |
| A | 0 | 8 | 57752 | 277.01 | 834 | 811 | 205.6 |
| A | 3 | 14 | 46388 | 221.72 | 834 | 811 | 205.6 |
| B | 7 | 252 | 242472 | 1337.33 | 844 | 811 | 180.7 |
| B | 5 | 236 | 148109 | 815.13 | 844 | 811 | 180.7 |
| B | 0 | 213 | 136998 | 753.65 | 844 | 811 | 180.7 |
| C | 15 | 233 | 352401 | 1541.0 | 830 | 821 | 228.2 |
| C | 12 | 252 | 236552 | 1033.22 | 830 | 821 | 228.2 |
| C | 13 | 3 | 113262 | 492.84 | 830 | 821 | 228.2 |
| D | 8 | 176 | 1739535 | 7634.49 | 803 | 767 | 227.8 |
| D | 11 | 176 | 302820 | 1326.24 | 803 | 767 | 227.8 |
| D | 2 | 165 | 262571 | 1149.52 | 803 | 767 | 227.8 |
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 |  |