Observation information
- date-obs: 2025-08-04
- time-obs: 14:24:06.840900000
- date-end: 2025-08-05
- time-end: 02:40:45.739900000
- obs_id: C09_011T08_9000006492
- exposure: 26218.5196082
- 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_53299cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53299cztM0_level2_quad_clean.evt
|
| Size (bytes) | 3,444,923,520 | 503,640,000 |
| Size | 3.2 GB
| 480.3 MB
|
| Events in quadrant A | 20,088,196 | 3,515,631 |
| Events in quadrant B | 29,035,698 | 3,591,061 |
| Events in quadrant C | 52,097,073 | 2,450,405 |
| Events in quadrant D | 23,455,882 | 3,159,530 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 87362 | 7 |
| B | 0 | 111894 | 8 |
| C | 0 | 180071 | 7 |
| D | 0 | 96584 | 7 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 75 | 0 |
| B | 0 | 75 | 0 |
| C | 0 | 75 | 0 |
| D | 0 | 75 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 748 | 0 |
| B | 0 | 748 | 0 |
| C | 0 | 748 | 0 |
| D | 0 | 748 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 36864 | 1004 | 2.723524% |
| B | 36863 | 3078 | 8.349836% |
| C | 36864 | 11652 | 31.608073% |
| D | 36864 | 1571 | 4.261610% |
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 | 44199 | 36871 | 687 | 687 | 1.55% | 1.86% |  |
| B | 44198 | 36870 | 2092 | 2092 | 4.73% | 5.67% |  |
| C | 44199 | 36870 | 10773 | 10773 | 24.37% | 29.22% |  |
| D | 44199 | 36871 | 1232 | 1232 | 2.79% | 3.34% |  |
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 | 3 | 62 | 1650301 | 1736.39 | 3805 | 3707 | 948.3 |
| A | 15 | 174 | 812598 | 853.0 | 3805 | 3707 | 948.3 |
| A | 0 | 8 | 531848 | 556.94 | 3805 | 3707 | 948.3 |
| B | 4 | 206 | 3980837 | 5192.32 | 3672 | 3541 | 766.0 |
| B | 4 | 81 | 2792313 | 3640.71 | 3672 | 3541 | 766.0 |
| B | 10 | 254 | 2009874 | 2619.25 | 3672 | 3541 | 766.0 |
| C | 1 | 241 | 20124646 | 23020.91 | 3167 | 3129 | 874.1 |
| C | 15 | 224 | 7942793 | 9083.72 | 3167 | 3129 | 874.1 |
| C | 4 | 5 | 2947575 | 3368.72 | 3167 | 3129 | 874.1 |
| D | 11 | 176 | 2830409 | 2705.69 | 3662 | 3492 | 1044.8 |
| D | 3 | 12 | 1402714 | 1339.22 | 3662 | 3492 | 1044.8 |
| D | 6 | 239 | 937472 | 893.93 | 3662 | 3492 | 1044.8 |
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 |  |