Observation information
- date-obs: 2025-06-21
- time-obs: 13:28:31.466500000
- date-end: 2025-06-21
- time-end: 15:33:51.449100000
- obs_id: C09_011T06_9000006478
- exposure: 5744.43765193
- 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_52638cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52638cztM0_level2_quad_clean.evt
|
| Size (bytes) | 631,419,840 | 90,676,800 |
| Size | 602.2 MB
| 86.5 MB
|
| Events in quadrant A | 3,930,983 | 613,836 |
| Events in quadrant B | 4,708,881 | 644,200 |
| Events in quadrant C | 6,875,837 | 536,441 |
| Events in quadrant D | 7,346,942 | 490,284 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16172 | 1 |
| B | 0 | 18492 | 1 |
| C | 0 | 24988 | 1 |
| D | 0 | 26410 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6595 | 193 | 2.926459% |
| B | 6596 | 226 | 3.426319% |
| C | 6596 | 782 | 11.855670% |
| D | 6596 | 1070 | 16.221953% |
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 | 7520 | 6595 | 103 | 103 | 1.37% | 1.56% |  |
| B | 7521 | 6597 | 114 | 114 | 1.52% | 1.73% |  |
| C | 7521 | 6597 | 721 | 721 | 9.59% | 10.93% |  |
| D | 7521 | 6597 | 908 | 908 | 12.07% | 13.76% |  |
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 | 206 | 337331 | 1960.89 | 684 | 666 | 171.7 |
| A | 3 | 46 | 200823 | 1165.8 | 684 | 666 | 171.7 |
| A | 8 | 246 | 100357 | 580.64 | 684 | 666 | 171.7 |
| B | 10 | 128 | 941559 | 6620.91 | 673 | 651 | 142.1 |
| B | 10 | 254 | 355947 | 2500.12 | 673 | 651 | 142.1 |
| B | 5 | 185 | 195272 | 1369.49 | 673 | 651 | 142.1 |
| C | 15 | 248 | 3196954 | 17952.99 | 642 | 635 | 178.0 |
| C | 13 | 3 | 409612 | 2297.13 | 642 | 635 | 178.0 |
| C | 15 | 157 | 152000 | 850.18 | 642 | 635 | 178.0 |
| D | 8 | 176 | 2868091 | 15572.55 | 631 | 600 | 184.1 |
| D | 6 | 42 | 651554 | 3535.15 | 631 | 600 | 184.1 |
| D | 2 | 62 | 188887 | 1022.53 | 631 | 600 | 184.1 |
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 |  |