Observation information
- date-obs: 2025-07-25
- time-obs: 06:02:18.802800000
- date-end: 2025-07-25
- time-end: 08:05:36.787000000
- obs_id: C09_011T07_9000006488
- exposure: 22.8734064698
- 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_011T07_9000006488_53139cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53139cztM0_level2_quad_clean.evt
|
| Size (bytes) | 868,561,920 | 75,934,080 |
| Size | 828.3 MB
| 72.4 MB
|
| Events in quadrant A | 17,192,077 | 1,976 |
| Events in quadrant B | 3,947,248 | 676,407 |
| Events in quadrant C | 6,138,926 | 567,868 |
| Events in quadrant D | 4,345,049 | 578,638 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 55602 | 1 |
| B | 0 | 16841 | 1 |
| C | 0 | 23062 | 1 |
| D | 0 | 17916 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6803 | 6787 | 99.764810% |
| B | 6803 | 232 | 3.410260% |
| C | 6803 | 747 | 10.980450% |
| D | 6803 | 279 | 4.101132% |
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 | 7398 | 6804 | 6059 | 6059 | 81.90% | 89.05% |  |
| B | 7398 | 6805 | 87 | 87 | 1.18% | 1.28% |  |
| C | 7398 | 6805 | 636 | 636 | 8.60% | 9.35% |  |
| D | 7398 | 6805 | 197 | 197 | 2.66% | 2.89% |  |
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 | 9 | 191 | 16109366 | 325748.51 | 189 | 184 | 49.5 |
| A | 0 | 8 | 212149 | 4286.21 | 189 | 184 | 49.5 |
| A | 7 | 206 | 64263 | 1295.76 | 189 | 184 | 49.5 |
| B | 2 | 249 | 431206 | 2943.84 | 688 | 664 | 146.3 |
| B | 10 | 254 | 419997 | 2867.19 | 688 | 664 | 146.3 |
| B | 4 | 81 | 119807 | 814.64 | 688 | 664 | 146.3 |
| C | 15 | 224 | 1648389 | 9168.07 | 647 | 640 | 179.7 |
| C | 0 | 240 | 943661 | 5246.97 | 647 | 640 | 179.7 |
| C | 9 | 38 | 369478 | 2052.21 | 647 | 640 | 179.7 |
| D | 8 | 176 | 424105 | 2238.72 | 667 | 639 | 189.2 |
| D | 6 | 42 | 220125 | 1160.35 | 667 | 639 | 189.2 |
| D | 1 | 0 | 201612 | 1062.47 | 667 | 639 | 189.2 |
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 |  |