Observation information
- date-obs: 2025-06-23
- time-obs: 19:10:15.259800000
- date-end: 2025-06-23
- time-end: 21:17:24.009200000
- obs_id: C09_011T07_9000006480
- exposure: 4749.17497474
- 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_9000006480_52672cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006480_52672cztM0_level2_quad_clean.evt
|
| Size (bytes) | 785,917,440 | 83,577,600 |
| Size | 749.5 MB
| 79.7 MB
|
| Events in quadrant A | 4,200,122 | 622,197 |
| Events in quadrant B | 9,888,253 | 493,645 |
| Events in quadrant C | 6,352,887 | 538,667 |
| Events in quadrant D | 8,156,189 | 429,159 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16933 | 2 |
| B | 0 | 33860 | 2 |
| C | 0 | 23306 | 2 |
| D | 0 | 28714 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6401 | 135 | 2.109045% |
| B | 6401 | 2026 | 31.651304% |
| C | 6401 | 859 | 13.419778% |
| D | 6401 | 1712 | 26.745821% |
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 | 7596 | 6402 | 44 | 44 | 0.58% | 0.69% |  |
| B | 7596 | 6401 | 1665 | 1665 | 21.92% | 26.01% |  |
| C | 7596 | 6401 | 905 | 905 | 11.91% | 14.14% |  |
| D | 7596 | 6401 | 1677 | 1677 | 22.08% | 26.20% |  |
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 | 3 | 14 | 1035303 | 6143.39 | 668 | 653 | 168.4 |
| A | 15 | 239 | 148707 | 879.09 | 668 | 653 | 168.4 |
| A | 13 | 248 | 64091 | 376.67 | 668 | 653 | 168.4 |
| B | 10 | 128 | 4909069 | 38706.52 | 605 | 586 | 126.8 |
| B | 10 | 254 | 950599 | 7491.46 | 605 | 586 | 126.8 |
| B | 12 | 32 | 629062 | 4955.93 | 605 | 586 | 126.8 |
| C | 15 | 248 | 2928048 | 16992.09 | 629 | 626 | 172.3 |
| C | 2 | 12 | 197913 | 1145.14 | 629 | 626 | 172.3 |
| C | 13 | 3 | 184652 | 1068.17 | 629 | 626 | 172.3 |
| D | 8 | 176 | 2451380 | 14913.93 | 560 | 533 | 164.3 |
| D | 1 | 7 | 1892431 | 11512.6 | 560 | 533 | 164.3 |
| D | 3 | 12 | 428465 | 2604.06 | 560 | 533 | 164.3 |
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 |  |