Observation information
- date-obs: 2025-08-13
- time-obs: 08:14:30.657600000
- date-end: 2025-08-13
- time-end: 10:11:51.049100000
- obs_id: C09_011T09_9000006494
- exposure: 2622.96863526
- 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_53422cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53422cztM0_level2_quad_clean.evt
|
| Size (bytes) | 752,362,560 | 75,847,680 |
| Size | 717.5 MB
| 72.3 MB
|
| Events in quadrant A | 3,969,218 | 586,382 |
| Events in quadrant B | 6,366,267 | 506,592 |
| Events in quadrant C | 12,659,729 | 247,011 |
| Events in quadrant D | 4,376,318 | 524,601 |
Level1 data integrity
| 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 | 16108 | 1 |
| B | 0 | 23006 | 1 |
| C | 0 | 41761 | 1 |
| D | 0 | 17310 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6176 | 238 | 3.853627% |
| B | 6176 | 1389 | 22.490285% |
| C | 6176 | 3787 | 61.318005% |
| D | 6177 | 310 | 5.018617% |
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 | 7041 | 6176 | 197 | 197 | 2.80% | 3.19% |  |
| B | 7041 | 6176 | 1095 | 1095 | 15.55% | 17.73% |  |
| C | 7040 | 6175 | 3791 | 3791 | 53.85% | 61.39% |  |
| D | 7042 | 6177 | 302 | 302 | 4.29% | 4.89% |  |
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 | 3 | 63 | 438139 | 2716.34 | 647 | 633 | 161.1 |
| A | 15 | 174 | 359804 | 2229.98 | 647 | 633 | 161.1 |
| A | 0 | 8 | 156488 | 967.66 | 647 | 633 | 161.1 |
| B | 4 | 206 | 3179116 | 25711.57 | 580 | 561 | 123.6 |
| B | 14 | 167 | 236673 | 1909.93 | 580 | 561 | 123.6 |
| B | 10 | 28 | 172880 | 1393.9 | 580 | 561 | 123.6 |
| C | 1 | 241 | 7624507 | 67750.96 | 412 | 408 | 112.5 |
| C | 9 | 38 | 1605111 | 14260.07 | 412 | 408 | 112.5 |
| C | 15 | 224 | 1204359 | 10698.82 | 412 | 408 | 112.5 |
| D | 12 | 1 | 892557 | 5029.36 | 623 | 592 | 177.4 |
| D | 2 | 249 | 235023 | 1321.84 | 623 | 592 | 177.4 |
| D | 10 | 172 | 218197 | 1226.97 | 623 | 592 | 177.4 |
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 |  |