Observation information
- date-obs: 2025-09-24
- time-obs: 13:25:51.356100000
- date-end: 2025-09-24
- time-end: 15:26:11.338900000
- obs_id: A14_041T01_9000006510
- exposure: 3270.73115134
- 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_54050cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54050cztM0_level2_quad_clean.evt
|
| Size (bytes) | 621,371,520 | 82,575,360 |
| Size | 592.6 MB
| 78.8 MB
|
| Events in quadrant A | 3,841,883 | 602,404 |
| Events in quadrant B | 5,403,005 | 618,778 |
| Events in quadrant C | 3,027,810 | 566,400 |
| Events in quadrant D | 10,255,439 | 287,313 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15748 | 1 |
| B | 0 | 20165 | 1 |
| C | 0 | 13573 | 2 |
| D | 0 | 34691 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6090 | 188 | 3.087028% |
| B | 6090 | 603 | 9.901478% |
| C | 6090 | 130 | 2.134647% |
| D | 6090 | 3034 | 49.819376% |
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 | 7220 | 6091 | 130 | 130 | 1.80% | 2.13% |  |
| B | 7220 | 6090 | 276 | 276 | 3.82% | 4.53% |  |
| C | 7220 | 6091 | 96 | 96 | 1.33% | 1.58% |  |
| D | 7220 | 6090 | 2470 | 2470 | 34.21% | 40.56% |  |
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 | 550481 | 3396.31 | 647 | 630 | 161.9 |
| A | 12 | 115 | 411639 | 2538.72 | 647 | 630 | 161.9 |
| A | 12 | 15 | 150421 | 925.23 | 647 | 630 | 161.9 |
| B | 5 | 236 | 2176034 | 16052.62 | 632 | 613 | 135.5 |
| B | 15 | 20 | 530882 | 3912.9 | 632 | 613 | 135.5 |
| B | 4 | 173 | 35166 | 254.97 | 632 | 613 | 135.5 |
| C | 4 | 5 | 167586 | 953.13 | 631 | 623 | 175.2 |
| C | 13 | 3 | 150120 | 853.43 | 631 | 623 | 175.2 |
| C | 12 | 252 | 58922 | 332.81 | 631 | 623 | 175.2 |
| D | 8 | 176 | 6688141 | 54028.71 | 432 | 413 | 123.8 |
| D | 2 | 165 | 799782 | 6457.93 | 432 | 413 | 123.8 |
| D | 12 | 2 | 320232 | 2583.75 | 432 | 413 | 123.8 |
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 |  |