Observation information
- date-obs: 2025-07-30
- time-obs: 04:05:47.864600000
- date-end: 2025-07-30
- time-end: 06:05:20.848500000
- obs_id: C09_011T06_9000006490
- exposure: 3134.56543142
- 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_9000006490_53212cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53212cztM0_level2_quad_clean.evt
|
| Size (bytes) | 859,680,000 | 78,068,160 |
| Size | 819.9 MB
| 74.5 MB
|
| Events in quadrant A | 4,498,947 | 606,205 |
| Events in quadrant B | 4,291,891 | 626,139 |
| Events in quadrant C | 11,241,000 | 280,086 |
| Events in quadrant D | 11,267,801 | 379,765 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 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 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18270 | 1 |
| B | 0 | 17950 | 1 |
| C | 0 | 38077 | 1 |
| D | 0 | 38126 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6758 | 381 | 5.637763% |
| B | 6758 | 553 | 8.182894% |
| C | 6759 | 3706 | 54.830596% |
| D | 6759 | 2472 | 36.573458% |
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 | 7173 | 6759 | 302 | 302 | 4.21% | 4.47% |  |
| B | 7173 | 6759 | 327 | 327 | 4.56% | 4.84% |  |
| C | 7174 | 6760 | 3115 | 3115 | 43.42% | 46.08% |  |
| D | 7174 | 6760 | 2552 | 2552 | 35.57% | 37.75% |  |
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 | 3 | 62 | 1209818 | 7154.61 | 679 | 663 | 169.0 |
| A | 0 | 8 | 204598 | 1206.69 | 679 | 663 | 169.0 |
| A | 3 | 14 | 99802 | 586.61 | 679 | 663 | 169.0 |
| B | 2 | 249 | 1143836 | 8162.27 | 665 | 641 | 140.1 |
| B | 4 | 81 | 230315 | 1639.84 | 665 | 641 | 140.1 |
| B | 10 | 247 | 102999 | 730.82 | 665 | 641 | 140.1 |
| C | 15 | 198 | 7717881 | 71031.18 | 390 | 386 | 108.6 |
| C | 4 | 5 | 878488 | 8081.98 | 390 | 386 | 108.6 |
| C | 15 | 224 | 858445 | 7897.5 | 390 | 386 | 108.6 |
| D | 15 | 125 | 7929391 | 48771.98 | 566 | 540 | 162.6 |
| D | 11 | 176 | 453609 | 2786.92 | 566 | 540 | 162.6 |
| D | 2 | 37 | 84342 | 515.48 | 566 | 540 | 162.6 |
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 |  |