Observation information
- date-obs: 2025-06-16
- time-obs: 08:35:45.445200000
- date-end: 2025-06-16
- time-end: 10:37:47.429700000
- obs_id: C09_011T06_9000006478
- exposure: 1948.61350244
- 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_9000006478_52561cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52561cztM0_level2_quad_clean.evt
|
| Size (bytes) | 879,724,800 | 88,217,280 |
| Size | 839.0 MB
| 84.1 MB
|
| Events in quadrant A | 3,538,254 | 681,718 |
| Events in quadrant B | 6,608,872 | 698,210 |
| Events in quadrant C | 5,544,329 | 622,400 |
| Events in quadrant D | 16,305,756 | 158,814 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15924 | 0 |
| B | 0 | 24704 | 6 |
| C | 0 | 21759 | 0 |
| D | 0 | 53395 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7322 | 94 | 1.283802% |
| B | 7322 | 515 | 7.033597% |
| C | 7323 | 451 | 6.158678% |
| D | 7322 | 5682 | 77.601748% |
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 | 7322 | 7322 | 72 | 72 | 0.98% | 0.98% |  |
| B | 7323 | 7323 | 282 | 282 | 3.85% | 3.85% |  |
| C | 7323 | 7323 | 412 | 412 | 5.63% | 5.63% |  |
| D | 7322 | 7322 | 5094 | 5094 | 69.57% | 69.57% |  |
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 | 4 | 249 | 193032 | 1004.94 | 764 | 745 | 191.3 |
| A | 3 | 14 | 69316 | 358.37 | 764 | 745 | 191.3 |
| A | 3 | 114 | 58995 | 304.43 | 764 | 745 | 191.3 |
| B | 10 | 254 | 1667922 | 10545.47 | 738 | 712 | 158.1 |
| B | 10 | 44 | 394659 | 2491.8 | 738 | 712 | 158.1 |
| B | 7 | 0 | 351472 | 2218.63 | 738 | 712 | 158.1 |
| C | 15 | 248 | 727488 | 3675.91 | 717 | 709 | 197.7 |
| C | 13 | 3 | 722211 | 3649.22 | 717 | 709 | 197.7 |
| C | 15 | 224 | 472577 | 2386.62 | 717 | 709 | 197.7 |
| D | 6 | 42 | 7456289 | 59569.22 | 431 | 412 | 125.2 |
| D | 2 | 62 | 3780379 | 30200.3 | 431 | 412 | 125.2 |
| D | 8 | 176 | 752447 | 6008.43 | 431 | 412 | 125.2 |
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 |  |