Observation information
- date-obs: 2025-06-21
- time-obs: 18:31:55.424000000
- date-end: 2025-06-21
- time-end: 20:40:33.406500000
- obs_id: C09_011T06_9000006478
- exposure: 4326.12327445
- 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_52642cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52642cztM0_level2_quad_clean.evt
|
| Size (bytes) | 714,493,440 | 82,889,280 |
| Size | 681.4 MB
| 79.0 MB
|
| Events in quadrant A | 4,231,652 | 599,766 |
| Events in quadrant B | 5,982,989 | 578,450 |
| Events in quadrant C | 7,056,940 | 512,406 |
| Events in quadrant D | 8,691,285 | 380,877 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16888 | 2 |
| B | 0 | 22127 | 2 |
| C | 0 | 25412 | 4 |
| D | 0 | 30221 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6273 | 293 | 4.670811% |
| B | 6273 | 1000 | 15.941336% |
| C | 6272 | 1076 | 17.155612% |
| D | 6272 | 2118 | 33.769133% |
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 | 7473 | 6274 | 199 | 199 | 2.66% | 3.17% |  |
| B | 7473 | 6274 | 737 | 737 | 9.86% | 11.75% |  |
| C | 7472 | 6273 | 960 | 960 | 12.85% | 15.30% |  |
| D | 7472 | 6273 | 1845 | 1845 | 24.69% | 29.41% |  |
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 | 5 | 243 | 301873 | 1850.28 | 650 | 634 | 162.8 |
| A | 3 | 14 | 284501 | 1743.58 | 650 | 634 | 162.8 |
| A | 4 | 95 | 230878 | 1414.22 | 650 | 634 | 162.8 |
| B | 4 | 158 | 2083586 | 15995.94 | 626 | 607 | 130.2 |
| B | 10 | 128 | 596893 | 4579.09 | 626 | 607 | 130.2 |
| B | 5 | 185 | 384053 | 2944.62 | 626 | 607 | 130.2 |
| C | 15 | 248 | 3374774 | 19930.72 | 608 | 602 | 169.3 |
| C | 12 | 252 | 380697 | 2245.16 | 608 | 602 | 169.3 |
| C | 15 | 178 | 374996 | 2211.49 | 608 | 602 | 169.3 |
| D | 15 | 93 | 3057380 | 19961.63 | 521 | 496 | 153.1 |
| D | 8 | 176 | 1815734 | 11853.61 | 521 | 496 | 153.1 |
| D | 1 | 7 | 273229 | 1780.96 | 521 | 496 | 153.1 |
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 |  |