Observation information
- date-obs: 2025-08-01
- time-obs: 20:00:07.364600000
- date-end: 2025-08-01
- time-end: 22:16:46.345300000
- obs_id: C09_011T08_9000006492
- exposure: 4956.80329973
- 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_53252cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53252cztM0_level2_quad_clean.evt
|
| Size (bytes) | 570,156,480 | 93,231,360 |
| Size | 543.7 MB
| 88.9 MB
|
| Events in quadrant A | 4,108,971 | 636,497 |
| Events in quadrant B | 4,084,668 | 686,550 |
| Events in quadrant C | 8,110,212 | 485,115 |
| Events in quadrant D | 4,305,924 | 569,272 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16576 | 2 |
| B | 0 | 16390 | 2 |
| C | 0 | 28519 | 4 |
| D | 0 | 17447 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 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 | 6388 | 179 | 2.802129% |
| B | 6388 | 164 | 2.567314% |
| C | 6387 | 1699 | 26.600908% |
| D | 6387 | 291 | 4.556130% |
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 | 7593 | 6389 | 138 | 138 | 1.82% | 2.16% |  |
| B | 7593 | 6389 | 82 | 82 | 1.08% | 1.28% |  |
| C | 7591 | 6387 | 1411 | 1411 | 18.59% | 22.09% |  |
| D | 7592 | 6388 | 235 | 235 | 3.10% | 3.68% |  |
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 | 4 | 238 | 374867 | 2182.55 | 678 | 660 | 171.5 |
| A | 7 | 206 | 226120 | 1314.99 | 678 | 660 | 171.5 |
| A | 8 | 230 | 190271 | 1105.9 | 678 | 660 | 171.5 |
| B | 12 | 33 | 372282 | 2577.7 | 680 | 658 | 144.2 |
| B | 2 | 249 | 260675 | 1803.56 | 680 | 658 | 144.2 |
| B | 0 | 213 | 194316 | 1343.27 | 680 | 658 | 144.2 |
| C | 15 | 224 | 3324669 | 20085.84 | 600 | 594 | 165.5 |
| C | 15 | 165 | 1027340 | 6204.15 | 600 | 594 | 165.5 |
| C | 1 | 241 | 502079 | 3030.24 | 600 | 594 | 165.5 |
| D | 13 | 170 | 289075 | 1537.87 | 657 | 626 | 187.6 |
| D | 12 | 17 | 259732 | 1381.43 | 657 | 626 | 187.6 |
| D | 12 | 16 | 193013 | 1025.72 | 657 | 626 | 187.6 |
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 |  |