Observation information
- date-obs: 2025-05-18
- time-obs: 08:49:04.461600000
- date-end: 2025-05-18
- time-end: 10:45:47.444400000
- obs_id: C09_011T07_9000006470
- exposure: 1037.49350488
- 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_9000006470_52131cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52131cztM0_level2_quad_clean.evt
|
| Size (bytes) | 827,714,880 | 69,151,680 |
| Size | 789.4 MB
| 65.9 MB
|
| Events in quadrant A | 4,161,483 | 545,410 |
| Events in quadrant B | 3,856,930 | 599,280 |
| Events in quadrant C | 7,710,689 | 437,844 |
| Events in quadrant D | 14,442,097 | 89,260 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 2 |
| B | 0 | 121 | 1 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16393 | 31 |
| B | 0 | 15765 | 62 |
| C | 0 | 27190 | 86 |
| D | 0 | 47189 | 183 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6049 | 351 | 5.802612% |
| B | 6044 | 208 | 3.441430% |
| C | 6044 | 1476 | 24.420913% |
| D | 6037 | 5205 | 86.218320% |
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 | 7003 | 6055 | 286 | 286 | 4.08% | 4.72% |  |
| B | 7004 | 6049 | 92 | 92 | 1.31% | 1.52% |  |
| C | 7004 | 6049 | 1182 | 1182 | 16.88% | 19.54% |  |
| D | 7003 | 6044 | 4847 | 4847 | 69.21% | 80.20% |  |
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 | 12 | 115 | 460317 | 2965.1 | 628 | 614 | 155.0 |
| A | 4 | 95 | 270808 | 1742.76 | 628 | 614 | 155.0 |
| A | 7 | 206 | 226325 | 1455.84 | 628 | 614 | 155.0 |
| B | 5 | 172 | 447103 | 3365.47 | 626 | 607 | 132.7 |
| B | 4 | 81 | 193277 | 1452.25 | 626 | 607 | 132.7 |
| B | 0 | 216 | 169990 | 1276.73 | 626 | 607 | 132.7 |
| C | 15 | 224 | 3817158 | 24795.32 | 555 | 550 | 153.9 |
| C | 0 | 161 | 464919 | 3016.86 | 555 | 550 | 153.9 |
| C | 4 | 5 | 272846 | 1769.02 | 555 | 550 | 153.9 |
| D | 6 | 42 | 8005436 | 84868.59 | 323 | 307 | 94.3 |
| D | 15 | 94 | 3331463 | 35316.17 | 323 | 307 | 94.3 |
| D | 0 | 18 | 511054 | 5414.83 | 323 | 307 | 94.3 |
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 |  |