Observation information
- date-obs: 2025-07-29
- time-obs: 21:03:00.923100000
- date-end: 2025-07-29
- time-end: 23:08:09.895500000
- obs_id: C09_011T06_9000006490
- exposure: 1513.34116954
- 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_53208cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53208cztM0_level2_quad_clean.evt
|
| Size (bytes) | 759,274,560 | 80,006,400 |
| Size | 724.1 MB
| 76.3 MB
|
| Events in quadrant A | 2,924,046 | 626,953 |
| Events in quadrant B | 3,173,733 | 676,097 |
| Events in quadrant C | 6,258,570 | 546,688 |
| Events in quadrant D | 15,260,633 | 132,585 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| 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 | 13500 | 3 |
| B | 0 | 14163 | 2 |
| C | 0 | 22962 | 2 |
| D | 0 | 49633 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6303 | 63 | 0.999524% |
| B | 6303 | 109 | 1.729335% |
| C | 6303 | 829 | 13.152467% |
| D | 6304 | 5021 | 79.647843% |
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 | 7508 | 6304 | 21 | 21 | 0.28% | 0.33% |  |
| B | 7508 | 6304 | 35 | 35 | 0.47% | 0.56% |  |
| C | 7508 | 6304 | 691 | 691 | 9.20% | 10.96% |  |
| D | 7509 | 6305 | 5235 | 5235 | 69.72% | 83.03% |  |
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 | 7 | 112 | 60055 | 356.09 | 662 | 646 | 166.8 |
| A | 5 | 240 | 41681 | 245.96 | 662 | 646 | 166.8 |
| A | 0 | 8 | 40039 | 236.11 | 662 | 646 | 166.8 |
| B | 2 | 249 | 129091 | 923.32 | 661 | 638 | 139.1 |
| B | 10 | 247 | 122835 | 878.35 | 661 | 638 | 139.1 |
| B | 4 | 81 | 92669 | 661.52 | 661 | 638 | 139.1 |
| C | 15 | 224 | 1539712 | 8972.11 | 618 | 615 | 171.5 |
| C | 15 | 198 | 1178793 | 6868.14 | 618 | 615 | 171.5 |
| C | 15 | 165 | 387710 | 2256.56 | 618 | 615 | 171.5 |
| D | 15 | 125 | 12260329 | 111508.16 | 374 | 356 | 109.9 |
| D | 12 | 3 | 310443 | 2820.33 | 374 | 356 | 109.9 |
| D | 11 | 176 | 303176 | 2754.24 | 374 | 356 | 109.9 |
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 |  |