Observation information
- date-obs: 2025-09-22
- time-obs: 21:11:36.720400000
- date-end: 2025-09-22
- time-end: 23:26:55.700000000
- obs_id: A14_041T01_9000006510
- exposure: 2963.51886904
- 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_54025cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54025cztM0_level2_quad_clean.evt
|
| Size (bytes) | 732,568,320 | 86,031,360 |
| Size | 698.6 MB
| 82.0 MB
|
| Events in quadrant A | 3,273,590 | 649,300 |
| Events in quadrant B | 5,813,868 | 610,389 |
| Events in quadrant C | 3,798,697 | 619,010 |
| Events in quadrant D | 13,700,927 | 250,255 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15035 | 2 |
| B | 0 | 22056 | 2 |
| C | 0 | 16388 | 2 |
| D | 0 | 45415 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6830 | 84 | 1.229868% |
| B | 6830 | 1063 | 15.563690% |
| C | 6830 | 152 | 2.225476% |
| D | 6829 | 4108 | 60.155220% |
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 | 7590 | 6831 | 51 | 51 | 0.67% | 0.75% |  |
| B | 7590 | 6829 | 778 | 778 | 10.25% | 11.39% |  |
| C | 7590 | 6831 | 92 | 92 | 1.21% | 1.35% |  |
| D | 7589 | 6828 | 3651 | 3651 | 48.11% | 53.47% |  |
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 | 15 | 174 | 356042 | 2027.31 | 709 | 691 | 175.3 |
| A | 0 | 8 | 42315 | 237.47 | 709 | 691 | 175.3 |
| A | 10 | 253 | 34505 | 192.91 | 709 | 691 | 175.3 |
| B | 5 | 236 | 2440483 | 17529.64 | 656 | 633 | 139.2 |
| B | 2 | 249 | 229109 | 1641.54 | 656 | 633 | 139.2 |
| B | 0 | 213 | 120803 | 863.39 | 656 | 633 | 139.2 |
| C | 13 | 3 | 501586 | 2637.19 | 693 | 685 | 189.9 |
| C | 9 | 53 | 184045 | 965.37 | 693 | 685 | 189.9 |
| C | 14 | 254 | 85878 | 448.53 | 693 | 685 | 189.9 |
| D | 8 | 176 | 11271943 | 87651.3 | 442 | 422 | 128.6 |
| D | 2 | 165 | 136509 | 1058.26 | 442 | 422 | 128.6 |
| D | 3 | 144 | 92006 | 712.19 | 442 | 422 | 128.6 |
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 |  |