Observation information
- date-obs: 2025-05-27
- time-obs: 11:26:30.671900000
- date-end: 2025-05-27
- time-end: 13:27:25.655300000
- obs_id: C09_011T05_9000006474
- exposure: 1940.31127203
- 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_52266cztM0_level2.fits
| modeM0/AS1C09_011T05_9000006474_52266cztM0_level2_quad_clean.evt
|
| Size (bytes) | 762,099,840 | 74,237,760 |
| Size | 726.8 MB
| 70.8 MB
|
| Events in quadrant A | 3,821,195 | 576,620 |
| Events in quadrant B | 7,303,615 | 536,782 |
| Events in quadrant C | 12,207,879 | 182,967 |
| Events in quadrant D | 4,395,976 | 517,652 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15677 | 2 |
| B | 0 | 26035 | 1 |
| C | 0 | 40511 | 7 |
| D | 0 | 17405 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6210 | 296 | 4.766506% |
| B | 6210 | 1275 | 20.531401% |
| C | 6210 | 4525 | 72.866345% |
| D | 6210 | 257 | 4.138486% |
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 | 7256 | 6212 | 177 | 177 | 2.44% | 2.85% |  |
| B | 7256 | 6212 | 804 | 804 | 11.08% | 12.94% |  |
| C | 7255 | 6211 | 3501 | 3501 | 48.26% | 56.37% |  |
| D | 7255 | 6211 | 205 | 205 | 2.83% | 3.30% |  |
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 | 4 | 249 | 370862 | 2318.82 | 643 | 628 | 159.7 |
| A | 13 | 248 | 246435 | 1539.52 | 643 | 628 | 159.7 |
| A | 15 | 174 | 129458 | 806.88 | 643 | 628 | 159.7 |
| B | 12 | 32 | 1778314 | 14221.88 | 589 | 571 | 125.0 |
| B | 10 | 254 | 1697470 | 13575.13 | 589 | 571 | 125.0 |
| B | 0 | 216 | 329780 | 2633.66 | 589 | 571 | 125.0 |
| C | 15 | 158 | 7573680 | 73430.36 | 373 | 370 | 103.1 |
| C | 15 | 224 | 2013288 | 19517.13 | 373 | 370 | 103.1 |
| C | 15 | 159 | 202225 | 1957.17 | 373 | 370 | 103.1 |
| D | 8 | 176 | 846353 | 4790.57 | 622 | 594 | 176.5 |
| D | 11 | 176 | 330873 | 1870.78 | 622 | 594 | 176.5 |
| D | 12 | 128 | 147161 | 830.19 | 622 | 594 | 176.5 |
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 |  |