Observation information
- date-obs: 2025-09-27
- time-obs: 19:19:30.644700000
- date-end: 2025-09-27
- time-end: 21:26:58.616300000
- obs_id: A14_041T01_9000006510
- exposure: 5403.70237887
- 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_54098cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54098cztM0_level2_quad_clean.evt
|
| Size (bytes) | 713,070,720 | 93,214,080 |
| Size | 680.0 MB
| 88.9 MB
|
| Events in quadrant A | 3,863,549 | 665,706 |
| Events in quadrant B | 9,567,344 | 557,142 |
| Events in quadrant C | 5,788,177 | 557,293 |
| Events in quadrant D | 6,627,669 | 548,458 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16800 | 3 |
| B | 0 | 33375 | 2 |
| C | 0 | 22383 | 2 |
| D | 0 | 24722 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7087 | 195 | 2.751517% |
| B | 7088 | 1905 | 26.876411% |
| C | 7088 | 990 | 13.967269% |
| D | 7088 | 826 | 11.653499% |
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 | 7647 | 7088 | 164 | 164 | 2.14% | 2.31% |  |
| B | 7648 | 7089 | 1500 | 1500 | 19.61% | 21.16% |  |
| C | 7648 | 7089 | 821 | 821 | 10.73% | 11.58% |  |
| D | 7648 | 7089 | 703 | 703 | 9.19% | 9.92% |  |
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 | 12 | 115 | 521684 | 2838.44 | 737 | 718 | 183.5 |
| A | 15 | 174 | 207260 | 1125.33 | 737 | 718 | 183.5 |
| A | 0 | 8 | 47251 | 253.53 | 737 | 718 | 183.5 |
| B | 5 | 250 | 5930818 | 41186.86 | 675 | 650 | 144.0 |
| B | 15 | 20 | 404880 | 2807.5 | 675 | 650 | 144.0 |
| B | 0 | 213 | 218960 | 1516.23 | 675 | 650 | 144.0 |
| C | 1 | 241 | 2155192 | 11821.07 | 666 | 660 | 182.3 |
| C | 13 | 3 | 569721 | 3122.21 | 666 | 660 | 182.3 |
| C | 1 | 16 | 185880 | 1016.23 | 666 | 660 | 182.3 |
| D | 15 | 78 | 2798497 | 14301.07 | 689 | 658 | 195.6 |
| D | 3 | 12 | 314681 | 1605.12 | 689 | 658 | 195.6 |
| D | 2 | 172 | 299763 | 1528.87 | 689 | 658 | 195.6 |
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 |  |