Observation information
- date-obs: 2025-06-18
- time-obs: 14:24:45.308100000
- date-end: 2025-06-18
- time-end: 16:24:07.013900000
- obs_id: C09_011T06_9000006478
- exposure: 2716.3937192
- 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_9000006478_52594cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52594cztM0_level2_quad_clean.evt
|
| Size (bytes) | 837,483,840 | 74,208,960 |
| Size | 798.7 MB
| 70.8 MB
|
| Events in quadrant A | 3,323,906 | 604,520 |
| Events in quadrant B | 3,971,471 | 618,259 |
| Events in quadrant C | 9,807,793 | 347,755 |
| Events in quadrant D | 13,409,721 | 236,041 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14286 | 1 |
| B | 0 | 16332 | 1 |
| C | 0 | 33559 | 1 |
| D | 0 | 44183 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6303 | 91 | 1.443757% |
| B | 6303 | 254 | 4.029827% |
| C | 6303 | 2749 | 43.614152% |
| D | 6302 | 4013 | 63.678197% |
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 | 7163 | 6303 | 56 | 56 | 0.78% | 0.89% |  |
| B | 7163 | 6303 | 157 | 157 | 2.19% | 2.49% |  |
| C | 7162 | 6302 | 2448 | 2448 | 34.18% | 38.84% |  |
| D | 7161 | 6301 | 4211 | 4211 | 58.80% | 66.83% |  |
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 | 8 | 9 | 136045 | 805.07 | 665 | 648 | 168.2 |
| A | 4 | 249 | 114691 | 678.1 | 665 | 648 | 168.2 |
| A | 15 | 174 | 108439 | 640.93 | 665 | 648 | 168.2 |
| B | 4 | 81 | 317588 | 2318.9 | 646 | 625 | 136.7 |
| B | 10 | 44 | 237765 | 1734.92 | 646 | 625 | 136.7 |
| B | 10 | 128 | 226146 | 1649.91 | 646 | 625 | 136.7 |
| C | 15 | 248 | 7385624 | 55285.81 | 480 | 477 | 133.6 |
| C | 13 | 3 | 207332 | 1548.53 | 480 | 477 | 133.6 |
| C | 12 | 249 | 98787 | 735.96 | 480 | 477 | 133.6 |
| D | 15 | 125 | 4449925 | 31804.08 | 476 | 454 | 139.9 |
| D | 6 | 42 | 2684071 | 19182.05 | 476 | 454 | 139.9 |
| D | 8 | 176 | 1291118 | 9225.45 | 476 | 454 | 139.9 |
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 |  |