Observation information
- date-obs: 2025-08-09
- time-obs: 22:23:25.768800000
- date-end: 2025-08-10
- time-end: 00:37:32.749400000
- obs_id: C09_011T09_9000006494
- exposure: 3102.8417815
- sourceid: NGC 188
- observer: stalin
- ra_pnt: 12.08
- dec_pnt: 85.15722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1C09_011T09_9000006494_53372cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53372cztM0_level2_quad_clean.evt
|
| Size (bytes) | 801,463,680 | 95,230,080 |
| Size | 764.3 MB
| 90.8 MB
|
| Events in quadrant A | 3,678,786 | 709,265 |
| Events in quadrant B | 5,606,134 | 719,962 |
| Events in quadrant C | 15,247,552 | 294,484 |
| Events in quadrant D | 4,558,099 | 641,901 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16589 | 6 |
| B | 0 | 22049 | 5 |
| C | 0 | 50459 | 2 |
| D | 0 | 18897 | 5 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7439 | 104 | 1.398037% |
| B | 7440 | 615 | 8.266129% |
| C | 7441 | 4698 | 63.136675% |
| D | 7439 | 137 | 1.841645% |
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 | 7811 | 7441 | 64 | 64 | 0.82% | 0.86% |  |
| B | 7811 | 7442 | 321 | 321 | 4.11% | 4.31% |  |
| C | 7811 | 7442 | 4205 | 4205 | 53.83% | 56.50% |  |
| D | 7811 | 7441 | 98 | 98 | 1.25% | 1.32% |  |
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 | 296044 | 1541.27 | 777 | 758 | 191.6 |
| A | 3 | 62 | 55753 | 287.05 | 777 | 758 | 191.6 |
| A | 14 | 254 | 49786 | 255.91 | 777 | 758 | 191.6 |
| B | 2 | 249 | 669404 | 4174.88 | 758 | 733 | 160.2 |
| B | 4 | 171 | 412517 | 2570.99 | 758 | 733 | 160.2 |
| B | 4 | 206 | 394211 | 2456.7 | 758 | 733 | 160.2 |
| C | 15 | 178 | 8991430 | 60126.59 | 542 | 536 | 149.5 |
| C | 15 | 224 | 1629374 | 10892.85 | 542 | 536 | 149.5 |
| C | 1 | 241 | 1318103 | 8811.23 | 542 | 536 | 149.5 |
| D | 11 | 245 | 277052 | 1271.01 | 759 | 725 | 217.4 |
| D | 12 | 35 | 251389 | 1152.97 | 759 | 725 | 217.4 |
| D | 2 | 249 | 236974 | 1086.66 | 759 | 725 | 217.4 |
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 |  |