Observation information
- date-obs: 2025-08-08
- time-obs: 01:20:27.154000000
- date-end: 2025-08-08
- time-end: 03:32:42.135100000
- obs_id: C09_011T08_9000006492
- exposure: 5631.04047114
- 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_53344cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53344cztM0_level2_quad_clean.evt
|
| Size (bytes) | 869,359,680 | 101,779,200 |
| Size | 829.1 MB
| 97.1 MB
|
| Events in quadrant A | 6,695,141 | 671,524 |
| Events in quadrant B | 7,435,952 | 690,548 |
| Events in quadrant C | 12,154,489 | 502,984 |
| Events in quadrant D | 5,281,389 | 664,691 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 25560 | 3 |
| B | 0 | 27627 | 0 |
| C | 0 | 41649 | 0 |
| D | 0 | 21697 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7934 | 1000 | 12.603983% |
| B | 7935 | 1341 | 16.899811% |
| C | 7935 | 2749 | 34.643982% |
| D | 7935 | 303 | 3.818526% |
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 | 7934 | 7934 | 930 | 930 | 11.72% | 11.72% |  |
| B | 7935 | 7935 | 989 | 989 | 12.46% | 12.46% |  |
| C | 7935 | 7935 | 2378 | 2378 | 29.97% | 29.97% |  |
| D | 7935 | 7935 | 270 | 270 | 3.40% | 3.40% |  |
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 | 15 | 174 | 2841792 | 14607.86 | 784 | 765 | 194.5 |
| A | 12 | 80 | 416337 | 2136.77 | 784 | 765 | 194.5 |
| A | 4 | 249 | 254092 | 1302.55 | 784 | 765 | 194.5 |
| B | 2 | 249 | 2246867 | 13924.93 | 756 | 727 | 161.3 |
| B | 4 | 206 | 869724 | 5387.34 | 756 | 727 | 161.3 |
| B | 10 | 28 | 612081 | 3790.09 | 756 | 727 | 161.3 |
| C | 15 | 158 | 4270523 | 21715.62 | 710 | 704 | 196.6 |
| C | 15 | 224 | 2084860 | 10599.69 | 710 | 704 | 196.6 |
| C | 9 | 38 | 917588 | 4663.13 | 710 | 704 | 196.6 |
| D | 2 | 62 | 604144 | 2693.62 | 787 | 752 | 224.0 |
| D | 8 | 176 | 588381 | 2623.26 | 787 | 752 | 224.0 |
| D | 10 | 172 | 417062 | 1858.46 | 787 | 752 | 224.0 |
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 |  |