Observation information
- date-obs: 2025-09-21
- time-obs: 14:15:31.997600000
- date-end: 2025-09-21
- time-end: 16:16:43.978700000
- obs_id: A14_041T01_9000006510
- exposure: 3295.86354434
- 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_54006cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54006cztM0_level2_quad_clean.evt
|
| Size (bytes) | 594,342,720 | 82,779,840 |
| Size | 566.8 MB
| 78.9 MB
|
| Events in quadrant A | 3,283,106 | 609,584 |
| Events in quadrant B | 5,224,355 | 612,146 |
| Events in quadrant C | 3,317,487 | 571,871 |
| Events in quadrant D | 9,700,713 | 285,645 |
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 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14343 | 1 |
| B | 0 | 19838 | 2 |
| C | 0 | 14007 | 1 |
| D | 0 | 33058 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6112 | 98 | 1.603403% |
| B | 6112 | 571 | 9.342277% |
| C | 6112 | 62 | 1.014398% |
| D | 6112 | 3037 | 49.689136% |
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 | 7272 | 6113 | 76 | 76 | 1.05% | 1.24% |  |
| B | 7272 | 6113 | 428 | 428 | 5.89% | 7.00% |  |
| C | 7272 | 6113 | 51 | 51 | 0.70% | 0.83% |  |
| D | 7271 | 6112 | 2427 | 2427 | 33.38% | 39.71% |  |
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 | 336041 | 2075.58 | 650 | 635 | 161.6 |
| A | 15 | 174 | 227494 | 1403.87 | 650 | 635 | 161.6 |
| A | 0 | 8 | 70623 | 433.1 | 650 | 635 | 161.6 |
| B | 4 | 81 | 870435 | 6590.44 | 622 | 600 | 132.0 |
| B | 5 | 250 | 610781 | 4623.13 | 622 | 600 | 132.0 |
| B | 0 | 155 | 492628 | 3727.92 | 622 | 600 | 132.0 |
| C | 12 | 250 | 320198 | 1832.68 | 637 | 631 | 174.4 |
| C | 13 | 3 | 171151 | 977.91 | 637 | 631 | 174.4 |
| C | 12 | 252 | 100532 | 572.92 | 637 | 631 | 174.4 |
| D | 8 | 176 | 6909382 | 56588.8 | 417 | 398 | 122.1 |
| D | 12 | 2 | 425490 | 3481.76 | 417 | 398 | 122.1 |
| D | 6 | 239 | 314046 | 2568.97 | 417 | 398 | 122.1 |
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 |  |