Observation information
- date-obs: 2025-06-19
- time-obs: 22:56:55.775400000
- date-end: 2025-06-20
- time-end: 01:24:26.755300000
- obs_id: C09_011T06_9000006478
- exposure: 1805.98740309
- 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_52615cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52615cztM0_level2_quad_clean.evt
|
| Size (bytes) | 988,246,080 | 79,444,800 |
| Size | 942.5 MB
| 75.8 MB
|
| Events in quadrant A | 3,646,512 | 645,734 |
| Events in quadrant B | 8,960,830 | 590,183 |
| Events in quadrant C | 15,933,627 | 163,595 |
| Events in quadrant D | 7,508,153 | 525,301 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16025 | 2 |
| B | 0 | 31467 | 2 |
| C | 0 | 52038 | 2 |
| D | 0 | 27180 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20 | 0 |
| B | 0 | 21 | 0 |
| C | 0 | 21 | 0 |
| D | 0 | 21 | 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 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6898 | 139 | 2.015077% |
| B | 6898 | 1420 | 20.585677% |
| C | 6898 | 5339 | 77.399246% |
| D | 6898 | 944 | 13.685126% |
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 | 7948 | 6899 | 105 | 105 | 1.32% | 1.52% |  |
| B | 7948 | 6899 | 1052 | 1052 | 13.24% | 15.25% |  |
| C | 7947 | 6898 | 4847 | 4847 | 60.99% | 70.27% |  |
| D | 7948 | 6899 | 892 | 892 | 11.22% | 12.93% |  |
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 | 277335 | 1597.32 | 696 | 681 | 173.2 |
| A | 14 | 254 | 131305 | 754.18 | 696 | 681 | 173.2 |
| A | 3 | 95 | 92847 | 532.14 | 696 | 681 | 173.2 |
| B | 10 | 128 | 3598424 | 25804.25 | 661 | 639 | 139.4 |
| B | 10 | 254 | 1533828 | 10996.43 | 661 | 639 | 139.4 |
| B | 8 | 234 | 299102 | 2140.65 | 661 | 639 | 139.4 |
| C | 15 | 248 | 13905154 | 131841.55 | 371 | 367 | 105.5 |
| C | 13 | 3 | 112624 | 1064.39 | 371 | 367 | 105.5 |
| C | 12 | 254 | 75505 | 712.44 | 371 | 367 | 105.5 |
| D | 8 | 176 | 2243047 | 11969.62 | 639 | 608 | 187.3 |
| D | 2 | 62 | 898448 | 4792.46 | 639 | 608 | 187.3 |
| D | 2 | 37 | 389940 | 2078.16 | 639 | 608 | 187.3 |
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 |  |