Observation information
- date-obs: 2025-07-06
- time-obs: 17:55:31.484300000
- date-end: 2025-07-06
- time-end: 18:30:03.480200000
- obs_id: C09_011T07_9000006480
- exposure: 766.51020664
- 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_011T07_9000006480_52864cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006480_52864cztM0_level2_quad_clean.evt
|
| Size (bytes) | 319,475,520 | 22,127,040 |
| Size | 304.7 MB
| 21.1 MB
|
| Events in quadrant A | 2,146,488 | 183,840 |
| Events in quadrant B | 3,882,147 | 111,286 |
| Events in quadrant C | 1,838,995 | 160,052 |
| Events in quadrant D | 3,795,777 | 64,787 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 40 | 0 |
| B | 0 | 40 | 0 |
| C | 0 | 40 | 0 |
| D | 0 | 40 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7859 | 0 |
| B | 0 | 12966 | 0 |
| C | 0 | 6975 | 0 |
| D | 0 | 12698 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 2072 | 187 | 9.025097% |
| B | 2073 | 1090 | 52.580801% |
| C | 2073 | 282 | 13.603473% |
| D | 2073 | 1373 | 66.232513% |
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 | 2072 | 2072 | 185 | 185 | 8.93% | 8.93% |  |
| B | 2073 | 2073 | 968 | 968 | 46.70% | 46.70% |  |
| C | 2073 | 2073 | 226 | 226 | 10.90% | 10.90% |  |
| D | 2073 | 2073 | 1044 | 1044 | 50.36% | 50.36% |  |
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 | 713465 | 14074.17 | 194 | 189 | 50.7 |
| A | 3 | 78 | 368168 | 7260.86 | 194 | 189 | 50.7 |
| A | 3 | 14 | 64317 | 1265.36 | 194 | 189 | 50.7 |
| B | 8 | 3 | 2390606 | 66492.74 | 161 | 155 | 36.0 |
| B | 0 | 213 | 699165 | 19443.64 | 161 | 155 | 36.0 |
| B | 5 | 185 | 43274 | 1199.38 | 161 | 155 | 36.0 |
| C | 15 | 224 | 855326 | 16127.5 | 188 | 186 | 53.0 |
| C | 7 | 80 | 82859 | 1559.17 | 188 | 186 | 53.0 |
| C | 4 | 5 | 49734 | 934.45 | 188 | 186 | 53.0 |
| D | 15 | 125 | 3014004 | 89926.91 | 109 | 104 | 33.5 |
| D | 8 | 176 | 130965 | 3904.55 | 109 | 104 | 33.5 |
| D | 3 | 12 | 44084 | 1312.25 | 109 | 104 | 33.5 |
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 |  |