Observation information
- date-obs: 2025-09-21
- time-obs: 21:07:00.933300000
- date-end: 2025-09-21
- time-end: 23:10:23.918800000
- obs_id: A14_041T01_9000006510
- exposure: 3824.06330967
- 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_54010cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54010cztM0_level2_quad_clean.evt
|
| Size (bytes) | 571,662,720 | 85,904,640 |
| Size | 545.2 MB
| 81.9 MB
|
| Events in quadrant A | 3,699,423 | 584,016 |
| Events in quadrant B | 3,399,157 | 668,401 |
| Events in quadrant C | 3,848,414 | 574,886 |
| Events in quadrant D | 9,713,733 | 324,955 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16035 | 1 |
| B | 0 | 14841 | 1 |
| C | 0 | 16188 | 1 |
| D | 0 | 33458 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6433 | 353 | 5.487331% |
| B | 6434 | 85 | 1.321107% |
| C | 6434 | 214 | 3.326080% |
| D | 6434 | 2790 | 43.363382% |
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 | 7403 | 6434 | 312 | 312 | 4.21% | 4.85% |  |
| B | 7404 | 6435 | 42 | 42 | 0.57% | 0.65% |  |
| C | 7404 | 6435 | 152 | 152 | 2.05% | 2.36% |  |
| D | 7404 | 6435 | 2343 | 2343 | 31.65% | 36.41% |  |
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 | 926961 | 5811.58 | 644 | 627 | 159.4 |
| A | 0 | 8 | 110042 | 686.44 | 644 | 627 | 159.4 |
| A | 8 | 249 | 69718 | 433.46 | 644 | 627 | 159.4 |
| B | 0 | 213 | 327334 | 2321.75 | 663 | 640 | 140.7 |
| B | 4 | 81 | 283966 | 2013.54 | 663 | 640 | 140.7 |
| B | 7 | 252 | 47408 | 332.37 | 663 | 640 | 140.7 |
| C | 14 | 80 | 507855 | 2837.2 | 650 | 643 | 178.8 |
| C | 4 | 5 | 275634 | 1538.22 | 650 | 643 | 178.8 |
| C | 12 | 250 | 247323 | 1379.85 | 650 | 643 | 178.8 |
| D | 8 | 176 | 7207171 | 54804.63 | 458 | 437 | 131.5 |
| D | 10 | 172 | 253892 | 1927.43 | 458 | 437 | 131.5 |
| D | 14 | 20 | 118927 | 901.07 | 458 | 437 | 131.5 |
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 |  |