Observation information
- date-obs: 2025-09-22
- time-obs: 12:49:19.796800000
- date-end: 2025-09-22
- time-end: 14:50:51.789800000
- obs_id: A14_041T01_9000006510
- exposure: 3263.56678259
- 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_54020cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54020cztM0_level2_quad_clean.evt
|
| Size (bytes) | 536,834,880 | 83,897,280 |
| Size | 512.0 MB
| 80.0 MB
|
| Events in quadrant A | 3,085,794 | 608,908 |
| Events in quadrant B | 3,318,558 | 659,091 |
| Events in quadrant C | 3,507,509 | 557,882 |
| Events in quadrant D | 9,473,207 | 277,948 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13747 | 1 |
| B | 0 | 14302 | 1 |
| C | 0 | 15093 | 1 |
| D | 0 | 32541 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6247 | 136 | 2.177045% |
| B | 6248 | 129 | 2.064661% |
| C | 6248 | 248 | 3.969270% |
| D | 6247 | 3162 | 50.616296% |
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 | 7292 | 6248 | 80 | 80 | 1.10% | 1.28% |  |
| B | 7293 | 6249 | 63 | 63 | 0.86% | 1.01% |  |
| C | 7293 | 6249 | 145 | 145 | 1.99% | 2.32% |  |
| D | 7292 | 6247 | 2153 | 2153 | 29.53% | 34.46% |  |
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 | 415939 | 2547.35 | 664 | 649 | 163.0 |
| A | 3 | 14 | 33684 | 202.63 | 664 | 649 | 163.0 |
| A | 13 | 254 | 13431 | 78.4 | 664 | 649 | 163.0 |
| B | 0 | 213 | 173048 | 1224.99 | 660 | 638 | 140.7 |
| B | 0 | 155 | 123367 | 872.0 | 660 | 638 | 140.7 |
| B | 5 | 185 | 122002 | 862.3 | 660 | 638 | 140.7 |
| C | 14 | 80 | 388781 | 2212.64 | 639 | 632 | 175.4 |
| C | 15 | 189 | 210396 | 1195.76 | 639 | 632 | 175.4 |
| C | 9 | 38 | 110093 | 623.98 | 639 | 632 | 175.4 |
| D | 8 | 176 | 7236080 | 61183.02 | 412 | 393 | 118.3 |
| D | 3 | 144 | 130289 | 1098.37 | 412 | 393 | 118.3 |
| D | 14 | 20 | 74329 | 625.18 | 412 | 393 | 118.3 |
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 |  |