Observation information
- date-obs: 2025-06-17
- time-obs: 00:05:39.325600000
- date-end: 2025-06-17
- time-end: 02:15:39.308400000
- obs_id: C09_011T06_9000006478
- exposure: 6051.70204037
- 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_52571cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52571cztM0_level2_quad_clean.evt
|
| Size (bytes) | 671,472,000 | 92,312,640 |
| Size | 640.4 MB
| 88.0 MB
|
| Events in quadrant A | 4,106,133 | 619,308 |
| Events in quadrant B | 7,832,466 | 627,698 |
| Events in quadrant C | 5,544,466 | 560,880 |
| Events in quadrant D | 6,853,528 | 519,269 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17280 | 1 |
| B | 0 | 27989 | 1 |
| C | 0 | 21395 | 1 |
| D | 0 | 24981 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 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 | 6710 | 295 | 4.396423% |
| B | 6711 | 845 | 12.591268% |
| C | 6711 | 686 | 10.222024% |
| D | 6711 | 751 | 11.190583% |
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 | 7800 | 6711 | 246 | 246 | 3.15% | 3.67% |  |
| B | 7801 | 6712 | 720 | 720 | 9.23% | 10.73% |  |
| C | 7801 | 6711 | 643 | 643 | 8.24% | 9.58% |  |
| D | 7801 | 6712 | 695 | 695 | 8.91% | 10.35% |  |
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 | 13 | 248 | 738218 | 4301.28 | 677 | 660 | 171.5 |
| A | 5 | 243 | 420833 | 2450.36 | 677 | 660 | 171.5 |
| A | 4 | 95 | 64295 | 371.11 | 677 | 660 | 171.5 |
| B | 10 | 254 | 4250810 | 30019.34 | 667 | 643 | 141.6 |
| B | 10 | 44 | 219002 | 1542.29 | 667 | 643 | 141.6 |
| B | 4 | 81 | 200077 | 1408.62 | 667 | 643 | 141.6 |
| C | 15 | 248 | 2390925 | 13641.62 | 635 | 629 | 175.2 |
| C | 13 | 3 | 496311 | 2828.9 | 635 | 629 | 175.2 |
| C | 1 | 45 | 38029 | 213.44 | 635 | 629 | 175.2 |
| D | 2 | 62 | 1649858 | 8898.5 | 632 | 601 | 185.3 |
| D | 8 | 176 | 657060 | 3541.9 | 632 | 601 | 185.3 |
| D | 12 | 17 | 429225 | 2312.62 | 632 | 601 | 185.3 |
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 |  |