Observation information
- date-obs: 2025-07-17
- time-obs: 14:19:07.239200000
- date-end: 2025-07-17
- time-end: 16:14:52.224500000
- obs_id: C09_011T07_9000006488
- exposure: 18.7029616237
- 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_53025cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53025cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,036,491,840 | 68,944,320 |
| Size | 988.5 MB
| 65.8 MB
|
| Events in quadrant A | 16,306,910 | 1,712 |
| Events in quadrant B | 5,250,238 | 621,889 |
| Events in quadrant C | 6,919,723 | 539,582 |
| Events in quadrant D | 9,352,967 | 440,369 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 53142 | 0 |
| B | 0 | 20438 | 0 |
| C | 0 | 25368 | 0 |
| D | 0 | 32613 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6945 | 6931 | 99.798416% |
| B | 6946 | 794 | 11.431039% |
| C | 6946 | 1031 | 14.843075% |
| D | 6945 | 2079 | 29.935205% |
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 | 6944 | 6944 | 6523 | 6523 | 93.94% | 93.94% |  |
| B | 6946 | 6946 | 627 | 627 | 9.03% | 9.03% |  |
| C | 6946 | 6946 | 990 | 990 | 14.25% | 14.25% |  |
| D | 6944 | 6944 | 1964 | 1964 | 28.28% | 28.28% |  |
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 | 15458638 | 527088.36 | 108 | 105 | 29.3 |
| A | 7 | 206 | 233897 | 7971.59 | 108 | 105 | 29.3 |
| A | 15 | 190 | 59104 | 2011.68 | 108 | 105 | 29.3 |
| B | 10 | 44 | 1466246 | 10184.36 | 680 | 657 | 143.9 |
| B | 2 | 249 | 277918 | 1926.68 | 680 | 657 | 143.9 |
| B | 4 | 81 | 160923 | 1113.69 | 680 | 657 | 143.9 |
| C | 15 | 224 | 1823302 | 10174.13 | 653 | 647 | 179.1 |
| C | 1 | 241 | 1443976 | 8056.72 | 653 | 647 | 179.1 |
| C | 7 | 80 | 247658 | 1378.83 | 653 | 647 | 179.1 |
| D | 12 | 17 | 3400051 | 19400.57 | 609 | 581 | 175.2 |
| D | 8 | 176 | 1748809 | 9977.03 | 609 | 581 | 175.2 |
| D | 15 | 78 | 435166 | 2480.15 | 609 | 581 | 175.2 |
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 |  |