Observation information
- date-obs: 2025-09-20
- time-obs: 12:17:51.224000000
- date-end: 2025-09-20
- time-end: 14:16:02.206000000
- obs_id: A14_041T01_9000006510
- exposure: 2188.08623022
- 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_53989cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_53989cztM0_level2_quad_clean.evt
|
| Size (bytes) | 628,764,480 | 78,635,520 |
| Size | 599.6 MB
| 75.0 MB
|
| Events in quadrant A | 3,269,381 | 588,137 |
| Events in quadrant B | 3,805,105 | 623,562 |
| Events in quadrant C | 3,222,006 | 551,768 |
| Events in quadrant D | 12,498,483 | 186,513 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14232 | 1 |
| B | 0 | 15741 | 1 |
| C | 0 | 14114 | 1 |
| D | 0 | 41402 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6166 | 194 | 3.146286% |
| B | 6167 | 328 | 5.318631% |
| C | 6166 | 110 | 1.783977% |
| D | 6166 | 4236 | 68.699319% |
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 | 7091 | 6166 | 114 | 114 | 1.61% | 1.85% |  |
| B | 7092 | 6168 | 225 | 225 | 3.17% | 3.65% |  |
| C | 7091 | 6167 | 69 | 69 | 0.97% | 1.12% |  |
| D | 7090 | 6165 | 3663 | 3663 | 51.66% | 59.42% |  |
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 | 542124 | 3326.89 | 652 | 635 | 162.8 |
| A | 13 | 248 | 52107 | 316.24 | 652 | 635 | 162.8 |
| A | 14 | 239 | 32006 | 192.74 | 652 | 635 | 162.8 |
| B | 5 | 185 | 675090 | 4919.65 | 640 | 621 | 137.1 |
| B | 0 | 213 | 227763 | 1656.8 | 640 | 621 | 137.1 |
| B | 2 | 249 | 151896 | 1103.42 | 640 | 621 | 137.1 |
| C | 13 | 3 | 292974 | 1676.66 | 636 | 630 | 174.4 |
| C | 12 | 249 | 90852 | 517.44 | 636 | 630 | 174.4 |
| C | 1 | 241 | 90537 | 515.64 | 636 | 630 | 174.4 |
| D | 8 | 176 | 8667886 | 85450.94 | 354 | 338 | 101.4 |
| D | 2 | 165 | 1036418 | 10214.42 | 354 | 338 | 101.4 |
| D | 10 | 172 | 532438 | 5245.83 | 354 | 338 | 101.4 |
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 |  |