Observation information
- date-obs: 2025-09-20
- time-obs: 22:09:57.137800000
- date-end: 2025-09-21
- time-end: 00:38:35.107500000
- obs_id: A14_041T01_9000006510
- exposure: 3552.70726508
- 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_53996cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_53996cztM0_level2_quad_clean.evt
|
| Size (bytes) | 614,805,120 | 94,320,000 |
| Size | 586.3 MB
| 90.0 MB
|
| Events in quadrant A | 3,238,125 | 687,637 |
| Events in quadrant B | 4,067,784 | 730,575 |
| Events in quadrant C | 4,155,755 | 638,736 |
| Events in quadrant D | 10,737,729 | 299,059 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15277 | 2 |
| B | 0 | 17348 | 3 |
| C | 0 | 17644 | 2 |
| D | 0 | 37227 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7178 | 43 | 0.599053% |
| B | 7178 | 256 | 3.566453% |
| C | 7178 | 265 | 3.691836% |
| D | 7178 | 3675 | 51.198105% |
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 | 8918 | 7180 | 11 | 11 | 0.12% | 0.15% |  |
| B | 8918 | 7178 | 112 | 112 | 1.26% | 1.56% |  |
| C | 8918 | 7179 | 214 | 214 | 2.40% | 2.98% |  |
| D | 8918 | 7179 | 3152 | 3152 | 35.34% | 43.91% |  |
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 | 90978 | 479.11 | 755 | 735 | 188.4 |
| A | 4 | 249 | 69986 | 367.66 | 755 | 735 | 188.4 |
| A | 8 | 6 | 28756 | 148.77 | 755 | 735 | 188.4 |
| B | 4 | 81 | 482914 | 3034.69 | 750 | 722 | 158.9 |
| B | 0 | 213 | 387260 | 2432.69 | 750 | 722 | 158.9 |
| B | 7 | 252 | 48975 | 303.68 | 750 | 722 | 158.9 |
| C | 1 | 241 | 436921 | 2152.97 | 734 | 727 | 202.6 |
| C | 10 | 171 | 366605 | 1805.9 | 734 | 727 | 202.6 |
| C | 13 | 3 | 83552 | 408.81 | 734 | 727 | 202.6 |
| D | 8 | 176 | 8000306 | 65118.52 | 423 | 403 | 122.9 |
| D | 2 | 165 | 478779 | 3893.94 | 423 | 403 | 122.9 |
| D | 6 | 239 | 246463 | 2002.91 | 423 | 403 | 122.9 |
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 |  |