Observation information
- date-obs: 2025-07-08
- time-obs: 11:26:29.153200000
- date-end: 2025-07-08
- time-end: 13:37:23.136900000
- obs_id: C09_011T08_9000006482
- exposure: 2891.20064604
- 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_9000006482_52890cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006482_52890cztM0_level2_quad_clean.evt
|
| Size (bytes) | 891,541,440 | 82,998,720 |
| Size | 850.2 MB
| 79.2 MB
|
| Events in quadrant A | 13,837,222 | 293,896 |
| Events in quadrant B | 7,713,322 | 576,411 |
| Events in quadrant C | 4,343,805 | 617,409 |
| Events in quadrant D | 6,589,356 | 557,594 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 45697 | 1 |
| B | 0 | 27509 | 1 |
| C | 0 | 17531 | 1 |
| D | 0 | 24156 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6704 | 4313 | 64.334726% |
| B | 6704 | 1611 | 24.030430% |
| C | 6705 | 201 | 2.997763% |
| D | 6705 | 697 | 10.395227% |
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 | 7854 | 6704 | 4090 | 4090 | 52.08% | 61.01% |  |
| B | 7854 | 6704 | 1403 | 1403 | 17.86% | 20.93% |  |
| C | 7855 | 6705 | 151 | 151 | 1.92% | 2.25% |  |
| D | 7855 | 6705 | 639 | 639 | 8.13% | 9.53% |  |
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 | 10288033 | 71244.02 | 581 | 567 | 144.4 |
| A | 12 | 17 | 492977 | 3410.1 | 581 | 567 | 144.4 |
| A | 8 | 43 | 249837 | 1726.28 | 581 | 567 | 144.4 |
| B | 8 | 3 | 4174361 | 29583.22 | 667 | 644 | 141.1 |
| B | 10 | 254 | 363983 | 2575.34 | 667 | 644 | 141.1 |
| B | 4 | 81 | 86212 | 606.5 | 667 | 644 | 141.1 |
| C | 7 | 80 | 535570 | 2822.58 | 694 | 688 | 189.5 |
| C | 2 | 12 | 175359 | 921.74 | 694 | 688 | 189.5 |
| C | 3 | 233 | 133784 | 702.35 | 694 | 688 | 189.5 |
| D | 8 | 176 | 1681619 | 8625.84 | 679 | 649 | 194.9 |
| D | 15 | 125 | 687679 | 3525.47 | 679 | 649 | 194.9 |
| D | 10 | 172 | 338817 | 1735.3 | 679 | 649 | 194.9 |
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 |  |