Observation information
- date-obs: 2025-05-29
- time-obs: 10:10:50.297200000
- date-end: 2025-05-29
- time-end: 12:14:01.281900000
- obs_id: C09_011T05_9000006474
- exposure: 1658.613011
- 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_011T05_9000006474_52295cztM0_level2.fits
| modeM0/AS1C09_011T05_9000006474_52295cztM0_level2_quad_clean.evt
|
| Size (bytes) | 770,172,480 | 77,423,040 |
| Size | 734.5 MB
| 73.8 MB
|
| Events in quadrant A | 4,256,553 | 595,549 |
| Events in quadrant B | 4,755,170 | 638,857 |
| Events in quadrant C | 13,411,699 | 158,137 |
| Events in quadrant D | 5,591,540 | 506,482 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17027 | 1 |
| B | 0 | 18557 | 3 |
| C | 0 | 44194 | 1 |
| D | 0 | 20985 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6376 | 233 | 3.654329% |
| B | 6376 | 247 | 3.873902% |
| C | 6376 | 4865 | 76.301757% |
| D | 6376 | 620 | 9.723965% |
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 | 7391 | 6377 | 174 | 174 | 2.35% | 2.73% |  |
| B | 7391 | 6377 | 121 | 121 | 1.64% | 1.90% |  |
| C | 7390 | 6375 | 4398 | 4398 | 59.51% | 68.99% |  |
| D | 7391 | 6377 | 562 | 562 | 7.60% | 8.81% |  |
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 | 12 | 3 | 791815 | 4843.79 | 664 | 649 | 163.3 |
| A | 10 | 253 | 105873 | 644.22 | 664 | 649 | 163.3 |
| A | 12 | 194 | 98608 | 599.74 | 664 | 649 | 163.3 |
| B | 10 | 254 | 687674 | 5017.25 | 651 | 630 | 136.9 |
| B | 0 | 216 | 296433 | 2160.15 | 651 | 630 | 136.9 |
| B | 4 | 171 | 289028 | 2106.07 | 651 | 630 | 136.9 |
| C | 15 | 178 | 5944043 | 67147.36 | 315 | 312 | 88.5 |
| C | 15 | 158 | 1509463 | 17049.14 | 315 | 312 | 88.5 |
| C | 5 | 250 | 1457088 | 16457.45 | 315 | 312 | 88.5 |
| D | 15 | 93 | 1199276 | 6819.25 | 619 | 591 | 175.8 |
| D | 8 | 176 | 1196725 | 6804.73 | 619 | 591 | 175.8 |
| D | 7 | 96 | 152066 | 861.73 | 619 | 591 | 175.8 |
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 |  |