Observation information
- date-obs: 2025-08-03
- time-obs: 01:39:42.129300000
- date-end: 2025-08-03
- time-end: 03:49:23.111700000
- obs_id: C09_011T08_9000006492
- exposure: 5166.85495228
- 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_011T08_9000006492_53270cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53270cztM0_level2_quad_clean.evt
|
| Size (bytes) | 694,546,560 | 95,212,800 |
| Size | 662.4 MB
| 90.8 MB
|
| Events in quadrant A | 4,508,088 | 660,341 |
| Events in quadrant B | 5,923,050 | 678,500 |
| Events in quadrant C | 10,303,255 | 465,976 |
| Events in quadrant D | 4,419,697 | 578,216 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18535 | 1 |
| B | 0 | 22628 | 1 |
| C | 0 | 35669 | 1 |
| D | 0 | 18560 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7171 | 189 | 2.635616% |
| B | 7171 | 603 | 8.408869% |
| C | 7171 | 2312 | 32.240971% |
| D | 7172 | 444 | 6.190742% |
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 | 7781 | 7171 | 147 | 147 | 1.89% | 2.05% |  |
| B | 7781 | 7172 | 417 | 417 | 5.36% | 5.81% |  |
| C | 7781 | 7172 | 2168 | 2168 | 27.86% | 30.23% |  |
| D | 7782 | 7173 | 388 | 388 | 4.99% | 5.41% |  |
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 | 704949 | 3935.1 | 724 | 706 | 179.0 |
| A | 3 | 27 | 502003 | 2801.1 | 724 | 706 | 179.0 |
| A | 12 | 80 | 89234 | 494.67 | 724 | 706 | 179.0 |
| B | 10 | 254 | 1380039 | 9122.24 | 709 | 685 | 151.2 |
| B | 2 | 249 | 629541 | 4158.88 | 709 | 685 | 151.2 |
| B | 4 | 81 | 522995 | 3454.25 | 709 | 685 | 151.2 |
| C | 10 | 22 | 2911227 | 16942.98 | 621 | 617 | 171.8 |
| C | 13 | 3 | 2077315 | 12088.69 | 621 | 617 | 171.8 |
| C | 15 | 224 | 1190915 | 6928.86 | 621 | 617 | 171.8 |
| D | 12 | 3 | 1026846 | 5264.36 | 675 | 643 | 194.9 |
| D | 1 | 0 | 121147 | 618.18 | 675 | 643 | 194.9 |
| D | 3 | 12 | 101527 | 517.53 | 675 | 643 | 194.9 |
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 |  |