Observation information
- date-obs: 2025-09-24
- time-obs: 21:49:56.282800000
- date-end: 2025-09-25
- time-end: 00:04:49.262700000
- obs_id: A14_041T01_9000006510
- exposure: 5627.96049827
- 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_54055cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54055cztM0_level2_quad_clean.evt
|
| Size (bytes) | 583,695,360 | 102,565,440 |
| Size | 556.7 MB
| 97.8 MB
|
| Events in quadrant A | 7,788,778 | 538,272 |
| Events in quadrant B | 4,489,078 | 753,758 |
| Events in quadrant C | 4,072,576 | 670,948 |
| Events in quadrant D | 4,669,230 | 617,653 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5 | 0 |
| B | 0 | 5 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 28648 | 6 |
| B | 0 | 18840 | 2 |
| C | 0 | 17965 | 2 |
| D | 0 | 19305 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7545 | 2113 | 28.005302% |
| B | 7545 | 321 | 4.254473% |
| C | 7545 | 174 | 2.306163% |
| D | 7545 | 258 | 3.419483% |
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 | 7849 | 7544 | 1310 | 1310 | 16.69% | 17.36% |  |
| B | 7850 | 7546 | 172 | 172 | 2.19% | 2.28% |  |
| C | 7850 | 7546 | 160 | 160 | 2.04% | 2.12% |  |
| D | 7850 | 7546 | 220 | 220 | 2.80% | 2.92% |  |
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 | 15 | 4802228 | 28798.73 | 674 | 657 | 166.7 |
| A | 15 | 174 | 171585 | 1025.19 | 674 | 657 | 166.7 |
| A | 0 | 8 | 42739 | 252.4 | 674 | 657 | 166.7 |
| B | 4 | 81 | 336859 | 2035.32 | 779 | 751 | 165.1 |
| B | 5 | 236 | 211845 | 1278.29 | 779 | 751 | 165.1 |
| B | 15 | 20 | 190514 | 1149.12 | 779 | 751 | 165.1 |
| C | 15 | 177 | 705350 | 3358.03 | 770 | 762 | 209.8 |
| C | 15 | 147 | 110684 | 523.88 | 770 | 762 | 209.8 |
| C | 12 | 252 | 103985 | 491.96 | 770 | 762 | 209.8 |
| D | 8 | 176 | 501192 | 2338.2 | 752 | 718 | 214.0 |
| D | 14 | 52 | 304751 | 1420.43 | 752 | 718 | 214.0 |
| D | 3 | 12 | 247813 | 1154.42 | 752 | 718 | 214.0 |
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 |  |