Observation information
- date-obs: 2025-09-21
- time-obs: 12:31:55.137000000
- date-end: 2025-09-21
- time-end: 14:34:34.991900000
- obs_id: A14_041T01_9000006510
- exposure: 2550.53429538
- 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_54005cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54005cztM0_level2_quad_clean.evt
|
| Size (bytes) | 708,480,000 | 77,734,080 |
| Size | 675.7 MB
| 74.1 MB
|
| Events in quadrant A | 3,188,835 | 606,974 |
| Events in quadrant B | 7,337,903 | 511,852 |
| Events in quadrant C | 3,499,592 | 573,073 |
| Events in quadrant D | 11,708,419 | 220,559 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14213 | 1 |
| B | 0 | 26070 | 4 |
| C | 0 | 14893 | 1 |
| D | 0 | 39134 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6320 | 143 | 2.262658% |
| B | 6319 | 1604 | 25.383763% |
| C | 6320 | 97 | 1.534810% |
| D | 6320 | 4014 | 63.512658% |
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 | 7359 | 6319 | 108 | 108 | 1.47% | 1.71% |  |
| B | 7358 | 6318 | 1357 | 1357 | 18.44% | 21.48% |  |
| C | 7359 | 6319 | 74 | 74 | 1.01% | 1.17% |  |
| D | 7359 | 6319 | 3351 | 3351 | 45.54% | 53.03% |  |
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 | 384938 | 2337.27 | 665 | 648 | 164.4 |
| A | 0 | 8 | 119079 | 720.3 | 665 | 648 | 164.4 |
| A | 7 | 14 | 19375 | 113.9 | 665 | 648 | 164.4 |
| B | 5 | 250 | 2228407 | 17416.62 | 598 | 577 | 127.9 |
| B | 4 | 81 | 1519457 | 11874.22 | 598 | 577 | 127.9 |
| B | 2 | 249 | 491752 | 3839.88 | 598 | 577 | 127.9 |
| C | 12 | 250 | 426813 | 2394.83 | 646 | 638 | 178.0 |
| C | 9 | 53 | 171611 | 960.76 | 646 | 638 | 178.0 |
| C | 13 | 3 | 132955 | 743.54 | 646 | 638 | 178.0 |
| D | 8 | 176 | 9452849 | 85585.88 | 378 | 361 | 110.4 |
| D | 6 | 239 | 359397 | 3250.83 | 378 | 361 | 110.4 |
| D | 6 | 127 | 100041 | 902.53 | 378 | 361 | 110.4 |
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 |  |