Observation information
- date-obs: 2025-09-26
- time-obs: 03:43:40.093700000
- date-end: 2025-09-26
- time-end: 09:04:15.958200000
- obs_id: A14_041T01_9000006510
- exposure: 12278.9772254
- 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_54075cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54075cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,555,496,640 | 227,309,760 |
| Size | 1.4 GB
| 216.8 MB
|
| Events in quadrant A | 9,362,431 | 1,587,649 |
| Events in quadrant B | 11,231,085 | 1,689,245 |
| Events in quadrant C | 12,158,550 | 1,423,194 |
| Events in quadrant D | 23,460,108 | 963,759 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 358 | 0 |
| B | 0 | 358 | 0 |
| C | 0 | 358 | 0 |
| D | 0 | 358 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 40652 | 4 |
| B | 0 | 45928 | 6 |
| C | 0 | 49266 | 3 |
| D | 0 | 81935 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 17671 | 592 | 3.350122% |
| B | 17670 | 1088 | 6.157329% |
| C | 17672 | 1525 | 8.629470% |
| D | 17672 | 5720 | 32.367587% |
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 | 19236 | 17673 | 352 | 352 | 1.83% | 1.99% |  |
| B | 19236 | 17672 | 674 | 674 | 3.50% | 3.81% |  |
| C | 19236 | 17673 | 1359 | 1359 | 7.06% | 7.69% |  |
| D | 19236 | 17673 | 5440 | 5440 | 28.28% | 30.78% |  |
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 | 1505752 | 3278.85 | 1858 | 1808 | 458.7 |
| A | 3 | 14 | 268804 | 582.1 | 1858 | 1808 | 458.7 |
| A | 0 | 8 | 115032 | 246.85 | 1858 | 1808 | 458.7 |
| B | 5 | 236 | 1975765 | 5092.87 | 1828 | 1761 | 387.6 |
| B | 10 | 28 | 486731 | 1251.21 | 1828 | 1761 | 387.6 |
| B | 5 | 185 | 396299 | 1017.9 | 1828 | 1761 | 387.6 |
| C | 15 | 233 | 3893665 | 8022.53 | 1754 | 1733 | 485.1 |
| C | 1 | 241 | 503538 | 1034.38 | 1754 | 1733 | 485.1 |
| C | 9 | 38 | 230265 | 471.08 | 1754 | 1733 | 485.1 |
| D | 8 | 176 | 7825337 | 17886.16 | 1527 | 1459 | 437.4 |
| D | 2 | 172 | 5586662 | 12768.33 | 1527 | 1459 | 437.4 |
| D | 2 | 165 | 2307888 | 5272.73 | 1527 | 1459 | 437.4 |
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 |  |