Observation information
- date-obs: 2025-06-13
- time-obs: 03:43:58.828700000
- date-end: 2025-06-21
- time-end: 22:55:00.389000000
- obs_id: C09_011T06_9000006478
- exposure: 131563.547624
- 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_011T06_9000006478cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478cztM0_level2_quad_clean.evt
|
| Size (bytes) | 5,050,212,480 | 2,887,430,400 |
| Size | 4.7 GB
| 2.7 GB
|
| Events in quadrant A | 31,702,554 | 12,434,186 |
| Events in quadrant B | 28,370,312 | 11,878,769 |
| Events in quadrant C | 24,997,242 | 8,977,285 |
| Events in quadrant D | 21,531,562 | 8,030,205 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1597697 | 0 |
| B | 0 | 2398812 | 0 |
| C | 0 | 3007587 | 0 |
| D | 0 | 3468557 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 786 | 0 |
| B | 0 | 787 | 0 |
| C | 0 | 787 | 0 |
| D | 0 | 787 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13656 | 0 |
| B | 0 | 13656 | 0 |
| C | 0 | 13656 | 0 |
| D | 0 | 13656 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 672951 | 19155 | 2.846418% |
| B | 672950 | 90710 | 13.479456% |
| C | 672943 | 195972 | 29.121634% |
| D | 672942 | 233321 | 34.671784% |
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 | 760264 | 672557 | 0 | 0 | 0.00% | 0.00% |  |
| B | 760264 | 671093 | 0 | 0 | 0.00% | 0.00% |  |
| C | 760264 | 642405 | 0 | 0 | 0.00% | 0.00% |  |
| D | 760262 | 660920 | 0 | 0 | 0.00% | 0.00% |  |
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 | 14 | 188 | 36491 | 10.37 | 8424 | 7835 | 2764.1 |
| A | 9 | 255 | 33325 | 9.22 | 8424 | 7835 | 2764.1 |
| A | 14 | 204 | 29330 | 7.78 | 8424 | 7835 | 2764.1 |
| B | 9 | 173 | 23643 | 9.2 | 7601 | 7221 | 1784.2 |
| B | 2 | 245 | 23105 | 8.9 | 7601 | 7221 | 1784.2 |
| B | 3 | 25 | 22709 | 8.68 | 7601 | 7221 | 1784.2 |
| C | 7 | 221 | 20144 | 6.16 | 6736 | 6171 | 2269.6 |
| C | 2 | 31 | 19921 | 6.06 | 6736 | 6171 | 2269.6 |
| C | 3 | 203 | 19500 | 5.87 | 6736 | 6171 | 2269.6 |
| D | 6 | 218 | 28690 | 11.08 | 6213 | 5508 | 2091.3 |
| D | 15 | 11 | 22647 | 8.2 | 6213 | 5508 | 2091.3 |
| D | 3 | 30 | 19879 | 6.87 | 6213 | 5508 | 2091.3 |
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 |  |