Observation information
- date-obs: 2025-09-27
- time-obs: 22:35:52.616100000
- date-end: 2025-09-28
- time-end: 00:57:21.594800000
- obs_id: A14_041T01_9000006510
- exposure: 7292.57709628
- 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_54100cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54100cztM0_level2_quad_clean.evt
|
| Size (bytes) | 650,574,720 | 117,106,560 |
| Size | 620.4 MB
| 111.7 MB
|
| Events in quadrant A | 3,867,495 | 804,522 |
| Events in quadrant B | 6,724,602 | 785,402 |
| Events in quadrant C | 7,864,246 | 655,168 |
| Events in quadrant D | 4,967,129 | 710,861 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 170 | 0 |
| B | 0 | 170 | 0 |
| C | 0 | 170 | 0 |
| D | 0 | 170 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17984 | 0 |
| B | 0 | 25956 | 0 |
| C | 0 | 29415 | 0 |
| D | 0 | 20959 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8489 | 50 | 0.588998% |
| B | 8489 | 947 | 11.155613% |
| C | 8489 | 1239 | 14.595359% |
| D | 8490 | 114 | 1.342756% |
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 | 8489 | 8489 | 32 | 32 | 0.38% | 0.38% |  |
| B | 8489 | 8489 | 412 | 412 | 4.85% | 4.85% |  |
| C | 8489 | 8489 | 1123 | 1123 | 13.23% | 13.23% |  |
| D | 8490 | 8490 | 82 | 82 | 0.97% | 0.97% |  |
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 | 13 | 248 | 149520 | 664.23 | 900 | 874 | 223.8 |
| A | 15 | 174 | 40796 | 178.39 | 900 | 874 | 223.8 |
| A | 0 | 8 | 35715 | 155.69 | 900 | 874 | 223.8 |
| B | 5 | 250 | 2407131 | 12962.64 | 870 | 840 | 185.6 |
| B | 1 | 255 | 198164 | 1062.98 | 870 | 840 | 185.6 |
| B | 7 | 252 | 168404 | 902.66 | 870 | 840 | 185.6 |
| C | 1 | 241 | 2805872 | 12545.14 | 812 | 803 | 223.6 |
| C | 1 | 16 | 1230639 | 5500.21 | 812 | 803 | 223.6 |
| C | 13 | 3 | 356332 | 1590.04 | 812 | 803 | 223.6 |
| D | 4 | 238 | 389885 | 1563.6 | 878 | 838 | 248.8 |
| D | 8 | 176 | 199256 | 797.45 | 878 | 838 | 248.8 |
| D | 3 | 12 | 166618 | 666.28 | 878 | 838 | 248.8 |
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 |  |