Observation information
- date-obs: 2025-08-02
- time-obs: 04:55:59.291300000
- date-end: 2025-08-02
- time-end: 06:57:55.276400000
- obs_id: C09_011T08_9000006492
- exposure: 5712.33018589
- 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_53257cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53257cztM0_level2_quad_clean.evt
|
| Size (bytes) | 656,524,800 | 99,360,000 |
| Size | 626.1 MB
| 94.8 MB
|
| Events in quadrant A | 4,212,855 | 670,619 |
| Events in quadrant B | 4,275,881 | 713,842 |
| Events in quadrant C | 9,940,825 | 505,864 |
| Events in quadrant D | 5,305,870 | 608,685 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17975 | 0 |
| B | 0 | 17920 | 0 |
| C | 0 | 34606 | 4 |
| D | 0 | 20944 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7316 | 187 | 2.556042% |
| B | 7317 | 232 | 3.170698% |
| C | 7316 | 1979 | 27.050301% |
| D | 7316 | 221 | 3.020776% |
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 | 7316 | 7316 | 154 | 154 | 2.10% | 2.10% |  |
| B | 7317 | 7317 | 171 | 171 | 2.34% | 2.34% |  |
| C | 7316 | 7316 | 1809 | 1809 | 24.73% | 24.73% |  |
| D | 7316 | 7316 | 226 | 226 | 3.09% | 3.09% |  |
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 | 7 | 206 | 608776 | 3338.34 | 739 | 722 | 182.1 |
| A | 0 | 8 | 125285 | 683.88 | 739 | 722 | 182.1 |
| A | 4 | 238 | 115971 | 632.74 | 739 | 722 | 182.1 |
| B | 2 | 249 | 471552 | 3005.65 | 734 | 710 | 156.7 |
| B | 4 | 81 | 338840 | 2158.48 | 734 | 710 | 156.7 |
| B | 5 | 185 | 219139 | 1394.36 | 734 | 710 | 156.7 |
| C | 15 | 224 | 4715332 | 26820.32 | 636 | 629 | 175.8 |
| C | 10 | 22 | 645342 | 3667.55 | 636 | 629 | 175.8 |
| C | 15 | 147 | 621129 | 3529.81 | 636 | 629 | 175.8 |
| D | 6 | 42 | 724175 | 3572.91 | 712 | 681 | 202.5 |
| D | 10 | 172 | 600121 | 2960.28 | 712 | 681 | 202.5 |
| D | 1 | 0 | 275134 | 1355.36 | 712 | 681 | 202.5 |
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 |  |