Observation information
- date-obs: 2025-09-24
- time-obs: 00:56:33.472400000
- date-end: 2025-09-24
- time-end: 03:15:23.452000000
- obs_id: A14_041T01_9000006510
- exposure: 3717.26235509
- 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_54042cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54042cztM0_level2_quad_clean.evt
|
| Size (bytes) | 800,507,520 | 105,048,000 |
| Size | 763.4 MB
| 100.2 MB
|
| Events in quadrant A | 4,985,838 | 750,532 |
| Events in quadrant B | 4,368,793 | 837,892 |
| Events in quadrant C | 5,367,894 | 714,174 |
| Events in quadrant D | 14,262,649 | 298,883 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 168 | 0 |
| B | 0 | 168 | 0 |
| C | 0 | 168 | 0 |
| D | 0 | 168 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21067 | 0 |
| B | 0 | 19259 | 0 |
| C | 0 | 22304 | 0 |
| D | 0 | 48323 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8330 | 380 | 4.561825% |
| B | 8331 | 213 | 2.556716% |
| C | 8331 | 517 | 6.205738% |
| D | 8331 | 4749 | 57.003961% |
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 | 8330 | 8330 | 314 | 314 | 3.77% | 3.77% |  |
| B | 8331 | 8331 | 88 | 88 | 1.06% | 1.06% |  |
| C | 8331 | 8331 | 387 | 387 | 4.65% | 4.65% |  |
| D | 8331 | 8331 | 4170 | 4170 | 50.05% | 50.05% |  |
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 | 825418 | 3901.77 | 855 | 831 | 211.3 |
| A | 0 | 8 | 470783 | 2223.71 | 855 | 831 | 211.3 |
| A | 13 | 248 | 164899 | 776.33 | 855 | 831 | 211.3 |
| B | 5 | 236 | 266072 | 1440.5 | 873 | 843 | 184.1 |
| B | 5 | 185 | 254626 | 1378.34 | 873 | 843 | 184.1 |
| B | 7 | 252 | 141633 | 764.65 | 873 | 843 | 184.1 |
| C | 15 | 158 | 836674 | 3564.54 | 848 | 837 | 234.5 |
| C | 13 | 3 | 475583 | 2024.62 | 848 | 837 | 234.5 |
| C | 15 | 147 | 184793 | 784.51 | 848 | 837 | 234.5 |
| D | 8 | 176 | 11514805 | 79859.44 | 505 | 483 | 144.2 |
| D | 3 | 12 | 238575 | 1651.33 | 505 | 483 | 144.2 |
| D | 10 | 172 | 224466 | 1553.47 | 505 | 483 | 144.2 |
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 |  |