Observation information
- date-obs: 2025-07-27
- time-obs: 02:56:48.448100000
- date-end: 2025-07-27
- time-end: 05:13:39.428200000
- obs_id: C09_011T06_9000006490
- exposure: 4048.04941583
- 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_011T06_9000006490_53167cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53167cztM0_level2_quad_clean.evt
|
| Size (bytes) | 875,865,600 | 82,298,880 |
| Size | 835.3 MB
| 78.5 MB
|
| Events in quadrant A | 4,953,461 | 628,855 |
| Events in quadrant B | 8,632,128 | 531,226 |
| Events in quadrant C | 8,202,500 | 510,022 |
| Events in quadrant D | 10,109,635 | 348,785 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19555 | 3 |
| B | 0 | 30352 | 2 |
| C | 0 | 29188 | 2 |
| D | 0 | 34932 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6781 | 331 | 4.881286% |
| B | 6781 | 1914 | 28.225925% |
| C | 6781 | 1328 | 19.584132% |
| D | 6781 | 2832 | 41.763752% |
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 | 7781 | 6782 | 278 | 278 | 3.57% | 4.10% |  |
| B | 7781 | 6782 | 1356 | 1356 | 17.43% | 19.99% |  |
| C | 7781 | 6782 | 1287 | 1287 | 16.54% | 18.98% |  |
| D | 7780 | 6780 | 2667 | 2667 | 34.28% | 39.34% |  |
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 | 62 | 985665 | 5779.55 | 681 | 663 | 170.4 |
| A | 8 | 249 | 518920 | 3040.9 | 681 | 663 | 170.4 |
| A | 12 | 80 | 272051 | 1592.38 | 681 | 663 | 170.4 |
| B | 10 | 191 | 2570182 | 19609.72 | 617 | 596 | 131.0 |
| B | 1 | 239 | 2016612 | 15385.16 | 617 | 596 | 131.0 |
| B | 10 | 254 | 989490 | 7546.71 | 617 | 596 | 131.0 |
| C | 1 | 241 | 2483432 | 14523.63 | 620 | 614 | 171.0 |
| C | 0 | 240 | 986584 | 5767.59 | 620 | 614 | 171.0 |
| C | 15 | 224 | 729007 | 4260.85 | 620 | 614 | 171.0 |
| D | 15 | 125 | 7237903 | 51382.16 | 483 | 460 | 140.9 |
| D | 12 | 3 | 536503 | 3805.63 | 483 | 460 | 140.9 |
| D | 2 | 249 | 114997 | 813.15 | 483 | 460 | 140.9 |
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 |  |