Observation information
- date-obs: 2025-09-19
- time-obs: 06:34:06.470400000
- date-end: 2025-09-28
- time-end: 00:57:21.594800000
- obs_id: A14_041T01_9000006510
- exposure: 94870.0383016
- 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_9000006510cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510cztM0_level2_quad_clean.evt
|
| Size (bytes) | 5,010,549,120 | 2,438,850,240 |
| Size | 4.7 GB
| 2.3 GB
|
| Events in quadrant A | 31,122,956 | 8,706,971 |
| Events in quadrant B | 28,764,924 | 9,086,088 |
| Events in quadrant C | 28,889,778 | 7,705,236 |
| Events in quadrant D | 19,793,956 | 5,305,467 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 743 | 0 |
| B | 0 | 743 | 0 |
| C | 0 | 744 | 0 |
| D | 0 | 744 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12736 | 0 |
| B | 0 | 12736 | 0 |
| C | 0 | 12736 | 0 |
| D | 0 | 12736 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1499972 | 0 |
| B | 0 | 1701750 | 0 |
| C | 0 | 1765984 | 0 |
| D | 0 | 2940029 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 628239 | 23181 | 3.689838% |
| B | 628248 | 41921 | 6.672683% |
| C | 628251 | 50484 | 8.035642% |
| D | 628243 | 213808 | 34.032691% |
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 | 757395 | 627920 | 0 | 0 | 0.00% | 0.00% |  |
| B | 757396 | 627721 | 0 | 0 | 0.00% | 0.00% |  |
| C | 757396 | 625337 | 0 | 0 | 0.00% | 0.00% |  |
| D | 757396 | 591872 | 0 | 0 | 0.00% | 0.00% |  |
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 | 14 | 188 | 34960 | 9.95 | 8188 | 7549 | 2753.7 |
| A | 9 | 255 | 31306 | 8.63 | 8188 | 7549 | 2753.7 |
| A | 14 | 204 | 28575 | 7.64 | 8188 | 7549 | 2753.7 |
| B | 2 | 9 | 33197 | 14.57 | 7646 | 7256 | 1779.8 |
| B | 2 | 8 | 29520 | 12.51 | 7646 | 7256 | 1779.8 |
| B | 9 | 173 | 24095 | 9.46 | 7646 | 7256 | 1779.8 |
| C | 15 | 175 | 24444 | 6.51 | 7751 | 7049 | 2670.3 |
| C | 2 | 31 | 23267 | 6.07 | 7751 | 7049 | 2670.3 |
| C | 3 | 203 | 22337 | 5.73 | 7751 | 7049 | 2670.3 |
| D | 6 | 218 | 25301 | 10.45 | 5681 | 5024 | 1939.6 |
| D | 15 | 11 | 19310 | 7.37 | 5681 | 5024 | 1939.6 |
| D | 3 | 30 | 18200 | 6.79 | 5681 | 5024 | 1939.6 |
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 |  |