Observation information
- date-obs: 2025-08-02
- time-obs: 22:06:47.157900000
- date-end: 2025-08-03
- time-end: 00:17:51.131900000
- obs_id: C09_011T08_9000006492
- exposure: 5080.26161325
- 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_53268cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53268cztM0_level2_quad_clean.evt
|
| Size (bytes) | 643,173,120 | 90,636,480 |
| Size | 613.4 MB
| 86.4 MB
|
| Events in quadrant A | 7,657,262 | 512,425 |
| Events in quadrant B | 4,597,139 | 662,763 |
| Events in quadrant C | 6,242,483 | 571,243 |
| Events in quadrant D | 4,813,294 | 548,635 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 27250 | 2 |
| B | 0 | 18299 | 2 |
| C | 0 | 23065 | 2 |
| D | 0 | 18839 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6432 | 1474 | 22.916667% |
| B | 6432 | 345 | 5.363806% |
| C | 6432 | 640 | 9.950249% |
| D | 6432 | 414 | 6.436567% |
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 | 7577 | 6433 | 1411 | 1411 | 18.62% | 21.93% |  |
| B | 7577 | 6432 | 172 | 172 | 2.27% | 2.67% |  |
| C | 7577 | 6432 | 577 | 577 | 7.62% | 8.97% |  |
| D | 7577 | 6433 | 380 | 380 | 5.02% | 5.91% |  |
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 | 2844280 | 18349.48 | 612 | 596 | 155.0 |
| A | 3 | 27 | 1643544 | 10601.48 | 612 | 596 | 155.0 |
| A | 8 | 47 | 159421 | 1024.85 | 612 | 596 | 155.0 |
| B | 10 | 254 | 992404 | 7106.36 | 663 | 641 | 139.6 |
| B | 2 | 249 | 302736 | 2164.63 | 663 | 641 | 139.6 |
| B | 4 | 171 | 278995 | 1994.51 | 663 | 641 | 139.6 |
| C | 15 | 224 | 1351569 | 7560.55 | 640 | 632 | 178.7 |
| C | 10 | 22 | 644098 | 3601.17 | 640 | 632 | 178.7 |
| C | 0 | 240 | 398555 | 2226.98 | 640 | 632 | 178.7 |
| D | 13 | 170 | 682471 | 3691.67 | 637 | 606 | 184.7 |
| D | 2 | 37 | 553958 | 2995.89 | 637 | 606 | 184.7 |
| D | 12 | 3 | 268159 | 1448.55 | 637 | 606 | 184.7 |
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 |  |