Observation information
- date-obs: 2025-09-19
- time-obs: 23:46:37.326900000
- date-end: 2025-09-20
- time-end: 02:05:03.308100000
- obs_id: A14_041T01_9000006510
- exposure: 3979.79006582
- 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_53982cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_53982cztM0_level2_quad_clean.evt
|
| Size (bytes) | 714,055,680 | 93,758,400 |
| Size | 681.0 MB
| 89.4 MB
|
| Events in quadrant A | 3,974,922 | 682,156 |
| Events in quadrant B | 4,145,748 | 721,961 |
| Events in quadrant C | 5,919,030 | 589,550 |
| Events in quadrant D | 11,822,845 | 334,285 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17470 | 2 |
| B | 0 | 17891 | 3 |
| C | 0 | 22776 | 2 |
| D | 0 | 40310 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7335 | 184 | 2.508521% |
| B | 7334 | 380 | 5.181347% |
| C | 7334 | 888 | 12.107990% |
| D | 7334 | 3531 | 48.145623% |
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 | 7725 | 7336 | 152 | 152 | 1.97% | 2.07% |  |
| B | 7724 | 7335 | 188 | 188 | 2.43% | 2.56% |  |
| C | 7724 | 7335 | 824 | 824 | 10.67% | 11.23% |  |
| D | 7724 | 7334 | 3188 | 3188 | 41.27% | 43.47% |  |
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 | 489688 | 2584.18 | 762 | 742 | 189.2 |
| A | 15 | 174 | 314037 | 1655.83 | 762 | 742 | 189.2 |
| A | 4 | 249 | 52724 | 274.74 | 762 | 742 | 189.2 |
| B | 5 | 185 | 581577 | 3595.49 | 753 | 728 | 161.5 |
| B | 0 | 213 | 225002 | 1388.27 | 753 | 728 | 161.5 |
| B | 4 | 81 | 155544 | 958.32 | 753 | 728 | 161.5 |
| C | 12 | 249 | 1785208 | 9150.15 | 709 | 702 | 195.0 |
| C | 1 | 241 | 335175 | 1715.03 | 709 | 702 | 195.0 |
| C | 12 | 2 | 247095 | 1263.39 | 709 | 702 | 195.0 |
| D | 8 | 176 | 8707766 | 57993.76 | 522 | 498 | 150.1 |
| D | 3 | 12 | 436055 | 2900.98 | 522 | 498 | 150.1 |
| D | 6 | 239 | 241227 | 1603.35 | 522 | 498 | 150.1 |
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 |  |