Observation information
- date-obs: 2025-05-04
- time-obs: 04:37:28.285400000
- date-end: 2025-05-04
- time-end: 06:38:09.269900000
- obs_id: C09_011T05_9000006466
- exposure: 2685.00414735
- 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_011T05_9000006466_51920cztM0_level2.fits
| modeM0/AS1C09_011T05_9000006466_51920cztM0_level2_quad_clean.evt
|
| Size (bytes) | 999,388,800 | 81,982,080 |
| Size | 953.1 MB
| 78.2 MB
|
| Events in quadrant A | 7,732,650 | 595,110 |
| Events in quadrant B | 6,196,742 | 647,284 |
| Events in quadrant C | 8,318,186 | 506,677 |
| Events in quadrant D | 14,186,977 | 228,642 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 27959 | 0 |
| B | 0 | 23541 | 0 |
| C | 0 | 29852 | 0 |
| D | 0 | 47169 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7241 | 1028 | 14.196934% |
| B | 7241 | 966 | 13.340699% |
| C | 7241 | 1832 | 25.300373% |
| D | 7242 | 4769 | 65.851975% |
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 | 7240 | 7240 | 948 | 948 | 13.09% | 13.09% |  |
| B | 7241 | 7241 | 691 | 691 | 9.54% | 9.54% |  |
| C | 7241 | 7241 | 1542 | 1542 | 21.30% | 21.30% |  |
| D | 7242 | 7242 | 4017 | 4017 | 55.47% | 55.47% |  |
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 | 7 | 64 | 2461393 | 14232.6 | 703 | 685 | 172.9 |
| A | 12 | 3 | 825981 | 4773.47 | 703 | 685 | 172.9 |
| A | 15 | 174 | 513460 | 2965.86 | 703 | 685 | 172.9 |
| B | 4 | 206 | 2385523 | 15829.5 | 697 | 673 | 150.7 |
| B | 5 | 185 | 212996 | 1409.3 | 697 | 673 | 150.7 |
| B | 10 | 254 | 122648 | 809.61 | 697 | 673 | 150.7 |
| C | 15 | 224 | 4359915 | 25001.54 | 632 | 627 | 174.4 |
| C | 15 | 158 | 413291 | 2366.73 | 632 | 627 | 174.4 |
| C | 13 | 3 | 324408 | 1856.96 | 632 | 627 | 174.4 |
| D | 15 | 94 | 7702224 | 62406.37 | 390 | 375 | 123.4 |
| D | 6 | 42 | 2327996 | 18860.19 | 390 | 375 | 123.4 |
| D | 3 | 12 | 628763 | 5091.69 | 390 | 375 | 123.4 |
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 |  |