Observation information
- date-obs: 2025-08-10
- time-obs: 10:49:43.660800000
- date-end: 2025-08-10
- time-end: 12:49:37.643100000
- obs_id: C09_011T09_9000006494
- exposure: 1378.28248882
- 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_53380cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53380cztM0_level2_quad_clean.evt
|
| Size (bytes) | 777,018,240 | 76,760,640 |
| Size | 741.0 MB
| 73.2 MB
|
| Events in quadrant A | 3,654,306 | 619,748 |
| Events in quadrant B | 5,828,996 | 580,945 |
| Events in quadrant C | 14,399,608 | 141,276 |
| Events in quadrant D | 4,392,237 | 543,379 |
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 | 15148 | 1 |
| B | 0 | 21586 | 4 |
| C | 0 | 46986 | 1 |
| D | 0 | 17368 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6284 | 156 | 2.482495% |
| B | 6284 | 1062 | 16.900064% |
| C | 6284 | 5000 | 79.567155% |
| D | 6284 | 335 | 5.330999% |
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 | 7194 | 6285 | 79 | 79 | 1.10% | 1.26% |  |
| B | 7194 | 6285 | 586 | 586 | 8.15% | 9.32% |  |
| C | 7193 | 6284 | 4692 | 4692 | 65.23% | 74.67% |  |
| D | 7194 | 6285 | 250 | 250 | 3.48% | 3.98% |  |
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 | 306458 | 1802.74 | 673 | 656 | 169.6 |
| A | 0 | 8 | 154363 | 906.12 | 673 | 656 | 169.6 |
| A | 3 | 27 | 128903 | 756.03 | 673 | 656 | 169.6 |
| B | 4 | 206 | 2216254 | 16641.6 | 624 | 604 | 133.1 |
| B | 4 | 171 | 373804 | 2803.08 | 624 | 604 | 133.1 |
| B | 5 | 185 | 223339 | 1672.95 | 624 | 604 | 133.1 |
| C | 1 | 241 | 8375986 | 93366.91 | 319 | 317 | 89.7 |
| C | 15 | 178 | 2732336 | 30454.9 | 319 | 317 | 89.7 |
| C | 15 | 224 | 1593346 | 17758.13 | 319 | 317 | 89.7 |
| D | 11 | 245 | 676500 | 3634.28 | 645 | 615 | 186.0 |
| D | 2 | 249 | 301022 | 1615.31 | 645 | 615 | 186.0 |
| D | 12 | 17 | 216093 | 1158.64 | 645 | 615 | 186.0 |
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 |  |