Observation information
- date-obs: 2025-05-17
- time-obs: 08:34:25.663100000
- date-end: 2025-05-17
- time-end: 10:29:06.646000000
- obs_id: C09_011T07_9000006470
- exposure: 167.417214096
- 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_9000006470_52115cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52115cztM0_level2_quad_clean.evt
|
| Size (bytes) | 814,256,640 | 71,637,120 |
| Size | 776.5 MB
| 68.3 MB
|
| Events in quadrant A | 3,144,998 | 629,055 |
| Events in quadrant B | 4,405,667 | 619,538 |
| Events in quadrant C | 7,300,491 | 487,211 |
| Events in quadrant D | 14,824,520 | 14,035 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13299 | 3 |
| B | 0 | 17155 | 1 |
| C | 0 | 25836 | 9 |
| D | 0 | 48112 | 10 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6000 | 81 | 1.350000% |
| B | 6002 | 298 | 4.965012% |
| C | 6000 | 1375 | 22.916667% |
| D | 6000 | 5863 | 97.716667% |
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 | 6881 | 6002 | 21 | 21 | 0.31% | 0.35% |  |
| B | 6882 | 6003 | 176 | 176 | 2.56% | 2.93% |  |
| C | 6881 | 6001 | 1120 | 1120 | 16.28% | 18.66% |  |
| D | 6880 | 6000 | 5290 | 5290 | 76.89% | 88.17% |  |
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 | 3 | 191189 | 1124.96 | 656 | 638 | 169.4 |
| A | 5 | 240 | 72361 | 423.43 | 656 | 638 | 169.4 |
| A | 15 | 174 | 34591 | 200.45 | 656 | 638 | 169.4 |
| B | 4 | 171 | 290725 | 2175.87 | 626 | 606 | 133.3 |
| B | 10 | 254 | 257942 | 1930.0 | 626 | 606 | 133.3 |
| B | 0 | 170 | 224871 | 1681.97 | 626 | 606 | 133.3 |
| C | 15 | 224 | 3380503 | 21136.93 | 565 | 558 | 159.9 |
| C | 15 | 217 | 653508 | 4083.31 | 565 | 558 | 159.9 |
| C | 2 | 239 | 491859 | 3072.42 | 565 | 558 | 159.9 |
| D | 6 | 42 | 9064080 | 160212.4 | 191 | 183 | 56.6 |
| D | 15 | 94 | 4287364 | 75779.72 | 191 | 183 | 56.6 |
| D | 5 | 206 | 131169 | 2315.29 | 191 | 183 | 56.6 |
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 |  |