Observation information
- date-obs: 2025-09-27
- time-obs: 20:51:09.631300000
- date-end: 2025-09-27
- time-end: 23:10:23.599600000
- obs_id: A14_041T01_9000006510
- exposure: 6051.71931416
- 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_54099cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54099cztM0_level2_quad_clean.evt
|
| Size (bytes) | 751,429,440 | 100,918,080 |
| Size | 716.6 MB
| 96.2 MB
|
| Events in quadrant A | 3,942,407 | 741,575 |
| Events in quadrant B | 9,291,639 | 627,074 |
| Events in quadrant C | 7,704,029 | 543,091 |
| Events in quadrant D | 6,272,880 | 601,731 |
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 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17461 | 1 |
| B | 0 | 33154 | 1 |
| C | 0 | 28563 | 1 |
| D | 0 | 24243 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7794 | 108 | 1.385681% |
| B | 7794 | 1932 | 24.788299% |
| C | 7794 | 1768 | 22.684116% |
| D | 7794 | 738 | 9.468822% |
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 | 8354 | 7795 | 54 | 54 | 0.65% | 0.69% |  |
| B | 8354 | 7795 | 1324 | 1324 | 15.85% | 16.99% |  |
| C | 8354 | 7795 | 1505 | 1505 | 18.02% | 19.31% |  |
| D | 8354 | 7795 | 636 | 636 | 7.61% | 8.16% |  |
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 | 7 | 14 | 185271 | 900.16 | 828 | 809 | 204.9 |
| A | 8 | 246 | 167251 | 812.23 | 828 | 809 | 204.9 |
| A | 0 | 8 | 64725 | 311.91 | 828 | 809 | 204.9 |
| B | 5 | 250 | 5126273 | 31185.03 | 768 | 738 | 164.4 |
| B | 15 | 20 | 218509 | 1324.97 | 768 | 738 | 164.4 |
| B | 0 | 213 | 209841 | 1272.23 | 768 | 738 | 164.4 |
| C | 1 | 241 | 3683165 | 19219.21 | 698 | 692 | 191.6 |
| C | 13 | 3 | 889789 | 4640.29 | 698 | 692 | 191.6 |
| C | 1 | 16 | 146029 | 758.53 | 698 | 692 | 191.6 |
| D | 8 | 176 | 1651323 | 7435.23 | 779 | 745 | 222.0 |
| D | 15 | 78 | 683651 | 3076.23 | 779 | 745 | 222.0 |
| D | 12 | 153 | 213562 | 958.66 | 779 | 745 | 222.0 |
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 |  |