Observation information
- date-obs: 2025-07-09
- time-obs: 15:24:35.931000000
- date-end: 2025-07-09
- time-end: 17:18:13.916500000
- obs_id: C09_011T06_9000006484
- exposure: 242.954736829
- 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_9000006484_52907cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006484_52907cztM0_level2_quad_clean.evt
|
| Size (bytes) | 838,872,000 | 71,421,120 |
| Size | 800.0 MB
| 68.1 MB
|
| Events in quadrant A | 15,576,002 | 22,992 |
| Events in quadrant B | 4,352,259 | 635,119 |
| Events in quadrant C | 3,855,416 | 566,830 |
| Events in quadrant D | 6,776,887 | 494,767 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 50510 | 9 |
| B | 0 | 17259 | 2 |
| C | 0 | 16000 | 2 |
| D | 0 | 24561 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6337 | 6161 | 97.222661% |
| B | 6338 | 237 | 3.739350% |
| C | 6338 | 197 | 3.108236% |
| D | 6338 | 1020 | 16.093405% |
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 | 6817 | 6339 | 5778 | 5778 | 84.76% | 91.15% |  |
| B | 6818 | 6340 | 162 | 162 | 2.38% | 2.56% |  |
| C | 6818 | 6340 | 116 | 116 | 1.70% | 1.83% |  |
| D | 6818 | 6340 | 969 | 969 | 14.21% | 15.28% |  |
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 | 9 | 191 | 14078656 | 215966.13 | 251 | 244 | 65.2 |
| A | 12 | 17 | 180249 | 2761.32 | 251 | 244 | 65.2 |
| A | 0 | 8 | 89949 | 1376.1 | 251 | 244 | 65.2 |
| B | 8 | 128 | 986742 | 7101.4 | 656 | 633 | 138.9 |
| B | 4 | 158 | 300759 | 2161.34 | 656 | 633 | 138.9 |
| B | 12 | 32 | 160139 | 1148.67 | 656 | 633 | 138.9 |
| C | 7 | 80 | 565499 | 3176.38 | 648 | 640 | 177.8 |
| C | 15 | 224 | 183034 | 1025.66 | 648 | 640 | 177.8 |
| C | 2 | 12 | 113630 | 635.38 | 648 | 640 | 177.8 |
| D | 8 | 176 | 2050072 | 11541.92 | 618 | 589 | 177.6 |
| D | 15 | 125 | 1187962 | 6686.84 | 618 | 589 | 177.6 |
| D | 15 | 174 | 354986 | 1995.83 | 618 | 589 | 177.6 |
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 |  |