Observation information
- date-obs: 2025-07-21
- time-obs: 11:50:55.505500000
- date-end: 2025-07-21
- time-end: 13:56:42.493200000
- obs_id: C09_011T07_9000006488
- exposure: 991.912928045
- 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_011T07_9000006488_53083cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53083cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,096,652,160 | 77,834,880 |
| Size | 1.0 GB
| 74.2 MB
|
| Events in quadrant A | 17,783,026 | 95,334 |
| Events in quadrant B | 5,955,016 | 694,035 |
| Events in quadrant C | 11,451,786 | 419,596 |
| Events in quadrant D | 4,820,989 | 622,389 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 57872 | 0 |
| B | 0 | 22991 | 0 |
| C | 0 | 39247 | 0 |
| D | 0 | 19532 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7548 | 6795 | 90.023847% |
| B | 7548 | 703 | 9.313725% |
| C | 7548 | 3008 | 39.851616% |
| D | 7548 | 240 | 3.179650% |
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 | 7547 | 7547 | 5889 | 5889 | 78.03% | 78.03% |  |
| B | 7547 | 7547 | 492 | 492 | 6.52% | 6.52% |  |
| C | 7548 | 7548 | 2647 | 2647 | 35.07% | 35.07% |  |
| D | 7548 | 7548 | 203 | 203 | 2.69% | 2.69% |  |
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 | 9 | 191 | 15214851 | 140750.46 | 423 | 412 | 108.1 |
| A | 3 | 14 | 399471 | 3691.74 | 423 | 412 | 108.1 |
| A | 7 | 206 | 135006 | 1245.14 | 423 | 412 | 108.1 |
| B | 2 | 249 | 1602879 | 10167.65 | 737 | 712 | 157.6 |
| B | 4 | 81 | 333088 | 2109.32 | 737 | 712 | 157.6 |
| B | 14 | 32 | 310287 | 1964.62 | 737 | 712 | 157.6 |
| C | 9 | 38 | 5504416 | 31812.03 | 628 | 619 | 173.0 |
| C | 15 | 224 | 2293447 | 13252.58 | 628 | 619 | 173.0 |
| C | 9 | 237 | 287226 | 1656.59 | 628 | 619 | 173.0 |
| D | 12 | 17 | 972366 | 4572.14 | 747 | 713 | 212.5 |
| D | 2 | 153 | 126154 | 590.27 | 747 | 713 | 212.5 |
| D | 2 | 120 | 99817 | 466.34 | 747 | 713 | 212.5 |
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 |  |