Observation information
- date-obs: 2025-07-30
- time-obs: 05:41:40.850800000
- date-end: 2025-07-30
- time-end: 07:49:53.835000000
- obs_id: C09_011T06_9000006490
- exposure: 4363.2572971
- 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_9000006490_53213cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53213cztM0_level2_quad_clean.evt
|
| Size (bytes) | 986,875,200 | 89,700,480 |
| Size | 941.2 MB
| 85.5 MB
|
| Events in quadrant A | 4,703,797 | 690,882 |
| Events in quadrant B | 4,810,702 | 731,374 |
| Events in quadrant C | 12,343,356 | 381,201 |
| Events in quadrant D | 14,078,812 | 376,867 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19766 | 0 |
| B | 0 | 20071 | 0 |
| C | 0 | 42039 | 0 |
| D | 0 | 47164 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7693 | 295 | 3.834655% |
| B | 7694 | 391 | 5.081882% |
| C | 7694 | 3512 | 45.645958% |
| D | 7694 | 3457 | 44.931115% |
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 | 7693 | 7693 | 277 | 277 | 3.60% | 3.60% |  |
| B | 7694 | 7694 | 308 | 308 | 4.00% | 4.00% |  |
| C | 7694 | 7694 | 3287 | 3287 | 42.72% | 42.72% |  |
| D | 7694 | 7694 | 3629 | 3629 | 47.17% | 47.17% |  |
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 | 1350565 | 7079.34 | 770 | 751 | 190.7 |
| A | 0 | 8 | 89282 | 464.32 | 770 | 751 | 190.7 |
| A | 4 | 249 | 66596 | 345.34 | 770 | 751 | 190.7 |
| B | 2 | 249 | 789160 | 4769.96 | 766 | 738 | 165.3 |
| B | 10 | 28 | 312226 | 1884.51 | 766 | 738 | 165.3 |
| B | 4 | 81 | 249209 | 1503.25 | 766 | 738 | 165.3 |
| C | 15 | 198 | 3885466 | 25486.81 | 554 | 549 | 152.4 |
| C | 1 | 241 | 3225675 | 21158.28 | 554 | 549 | 152.4 |
| C | 15 | 224 | 2408492 | 15797.19 | 554 | 549 | 152.4 |
| D | 15 | 125 | 10495544 | 59259.41 | 618 | 588 | 177.1 |
| D | 2 | 37 | 364318 | 2053.79 | 618 | 588 | 177.1 |
| D | 11 | 176 | 292160 | 1646.35 | 618 | 588 | 177.1 |
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 |  |