Observation information
- date-obs: 2025-09-19
- time-obs: 17:04:10.383000000
- date-end: 2025-09-19
- time-end: 19:08:05.365900000
- obs_id: A14_041T01_9000006510
- exposure: 3029.17781204
- 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_53978cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_53978cztM0_level2_quad_clean.evt
|
| Size (bytes) | 632,678,400 | 85,651,200 |
| Size | 603.4 MB
| 81.7 MB
|
| Events in quadrant A | 3,129,570 | 627,648 |
| Events in quadrant B | 4,573,516 | 652,642 |
| Events in quadrant C | 3,834,957 | 602,588 |
| Events in quadrant D | 11,397,724 | 275,597 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13879 | 1 |
| B | 0 | 18102 | 3 |
| C | 0 | 15672 | 1 |
| D | 0 | 38203 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6235 | 104 | 1.668003% |
| B | 6235 | 454 | 7.281476% |
| C | 6235 | 138 | 2.213312% |
| D | 6235 | 3354 | 53.793103% |
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 | 7435 | 6236 | 63 | 63 | 0.85% | 1.01% |  |
| B | 7435 | 6236 | 278 | 278 | 3.74% | 4.46% |  |
| C | 7435 | 6236 | 97 | 97 | 1.30% | 1.56% |  |
| D | 7434 | 6235 | 3094 | 3094 | 41.62% | 49.62% |  |
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 | 310954 | 1848.66 | 672 | 655 | 167.9 |
| A | 4 | 249 | 37125 | 217.28 | 672 | 655 | 167.9 |
| A | 3 | 78 | 31130 | 181.56 | 672 | 655 | 167.9 |
| B | 0 | 155 | 1164588 | 8316.88 | 662 | 639 | 140.0 |
| B | 5 | 250 | 483946 | 3453.42 | 662 | 639 | 140.0 |
| B | 0 | 213 | 182941 | 1302.62 | 662 | 639 | 140.0 |
| C | 9 | 53 | 430843 | 2347.28 | 663 | 659 | 183.3 |
| C | 1 | 241 | 247459 | 1346.65 | 663 | 659 | 183.3 |
| C | 12 | 249 | 134706 | 731.42 | 663 | 659 | 183.3 |
| D | 8 | 176 | 6595073 | 49968.1 | 461 | 440 | 132.0 |
| D | 5 | 113 | 1534310 | 11622.26 | 461 | 440 | 132.0 |
| D | 13 | 46 | 586177 | 4438.18 | 461 | 440 | 132.0 |
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 |  |