Observation information
- date-obs: 2025-06-16
- time-obs: 01:16:56.501300000
- date-end: 2025-06-16
- time-end: 03:41:13.482100000
- obs_id: C09_011T06_9000006478
- exposure: 4360.8314383
- 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_9000006478_52557cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52557cztM0_level2_quad_clean.evt
|
| Size (bytes) | 767,615,040 | 86,022,720 |
| Size | 732.1 MB
| 82.0 MB
|
| Events in quadrant A | 3,249,290 | 639,041 |
| Events in quadrant B | 9,063,190 | 530,662 |
| Events in quadrant C | 4,805,075 | 589,602 |
| Events in quadrant D | 10,769,077 | 369,658 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14992 | 3 |
| B | 0 | 31661 | 3 |
| C | 0 | 19231 | 3 |
| D | 0 | 36756 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6818 | 76 | 1.114696% |
| B | 6817 | 1812 | 26.580607% |
| C | 6817 | 388 | 5.691653% |
| D | 6817 | 2750 | 40.340326% |
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 | 7883 | 6820 | 42 | 42 | 0.53% | 0.62% |  |
| B | 7882 | 6819 | 1543 | 1543 | 19.58% | 22.63% |  |
| C | 7882 | 6819 | 354 | 354 | 4.49% | 5.19% |  |
| D | 7881 | 6817 | 2450 | 2450 | 31.09% | 35.94% |  |
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 | 4 | 95 | 142873 | 818.45 | 695 | 678 | 173.7 |
| A | 3 | 14 | 101434 | 579.93 | 695 | 678 | 173.7 |
| A | 13 | 248 | 85470 | 488.05 | 695 | 678 | 173.7 |
| B | 10 | 44 | 4041247 | 31832.06 | 600 | 579 | 126.9 |
| B | 10 | 254 | 1363393 | 10736.14 | 600 | 579 | 126.9 |
| B | 4 | 170 | 758129 | 5967.92 | 600 | 579 | 126.9 |
| C | 15 | 248 | 1420787 | 7751.56 | 661 | 653 | 183.2 |
| C | 15 | 224 | 229426 | 1248.72 | 661 | 653 | 183.2 |
| C | 13 | 3 | 108034 | 586.12 | 661 | 653 | 183.2 |
| D | 6 | 42 | 5145320 | 31998.47 | 547 | 521 | 160.8 |
| D | 8 | 176 | 1247414 | 7755.15 | 547 | 521 | 160.8 |
| D | 2 | 62 | 640973 | 3983.34 | 547 | 521 | 160.8 |
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 |  |