Observation information
- date-obs: 2025-08-02
- time-obs: 01:21:43.320200000
- date-end: 2025-08-02
- time-end: 03:31:36.302700000
- obs_id: C09_011T08_9000006492
- exposure: 5673.52728593
- 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_011T08_9000006492_53255cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53255cztM0_level2_quad_clean.evt
|
| Size (bytes) | 598,299,840 | 96,405,120 |
| Size | 570.6 MB
| 91.9 MB
|
| Events in quadrant A | 4,228,366 | 644,748 |
| Events in quadrant B | 4,622,107 | 691,303 |
| Events in quadrant C | 8,509,831 | 515,662 |
| Events in quadrant D | 4,245,611 | 580,932 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17782 | 2 |
| B | 0 | 18672 | 2 |
| C | 0 | 30165 | 3 |
| D | 0 | 17693 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6979 | 246 | 3.524860% |
| B | 6979 | 276 | 3.954721% |
| C | 6978 | 1510 | 21.639438% |
| D | 6978 | 271 | 3.883634% |
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 | 7794 | 6980 | 204 | 204 | 2.62% | 2.92% |  |
| B | 7794 | 6980 | 204 | 204 | 2.62% | 2.92% |  |
| C | 7793 | 6978 | 1407 | 1407 | 18.05% | 20.16% |  |
| D | 7793 | 6979 | 242 | 242 | 3.11% | 3.47% |  |
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 | 0 | 8 | 343304 | 1982.62 | 698 | 682 | 172.8 |
| A | 4 | 249 | 327696 | 1892.3 | 698 | 682 | 172.8 |
| A | 8 | 230 | 154155 | 888.09 | 698 | 682 | 172.8 |
| B | 2 | 249 | 718663 | 4821.6 | 699 | 674 | 148.9 |
| B | 10 | 254 | 554612 | 3719.93 | 699 | 674 | 148.9 |
| B | 4 | 81 | 351722 | 2357.43 | 699 | 674 | 148.9 |
| C | 15 | 224 | 1584827 | 9288.32 | 622 | 617 | 170.6 |
| C | 1 | 241 | 1276819 | 7482.45 | 622 | 617 | 170.6 |
| C | 10 | 22 | 1237186 | 7250.08 | 622 | 617 | 170.6 |
| D | 12 | 17 | 227287 | 1163.35 | 675 | 642 | 194.8 |
| D | 1 | 0 | 177940 | 910.05 | 675 | 642 | 194.8 |
| D | 10 | 117 | 176635 | 903.36 | 675 | 642 | 194.8 |
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 |  |