Observation information
- date-obs: 2025-07-25
- time-obs: 19:43:28.699900000
- date-end: 2025-07-25
- time-end: 21:59:27.681300000
- obs_id: C09_011T07_9000006488
- exposure: 5175.00058717
- 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_9000006488_53148cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53148cztM0_level2_quad_clean.evt
|
| Size (bytes) | 579,677,760 | 94,210,560 |
| Size | 552.8 MB
| 89.8 MB
|
| Events in quadrant A | 3,516,975 | 646,551 |
| Events in quadrant B | 3,499,489 | 682,121 |
| Events in quadrant C | 7,940,350 | 490,707 |
| Events in quadrant D | 5,991,136 | 574,438 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15333 | 2 |
| B | 0 | 15212 | 2 |
| C | 0 | 28218 | 2 |
| D | 0 | 22346 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6576 | 119 | 1.809611% |
| B | 6576 | 144 | 2.189781% |
| C | 6576 | 1565 | 23.798662% |
| D | 6575 | 335 | 5.095057% |
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 | 7646 | 6577 | 76 | 76 | 0.99% | 1.16% |  |
| B | 7646 | 6576 | 88 | 88 | 1.15% | 1.34% |  |
| C | 7646 | 6577 | 1429 | 1429 | 18.69% | 21.73% |  |
| D | 7645 | 6576 | 280 | 280 | 3.66% | 4.26% |  |
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 | 206 | 202027 | 1156.86 | 691 | 674 | 174.1 |
| A | 15 | 174 | 167329 | 957.51 | 691 | 674 | 174.1 |
| A | 12 | 115 | 160165 | 916.35 | 691 | 674 | 174.1 |
| B | 4 | 81 | 295288 | 2035.58 | 683 | 662 | 144.7 |
| B | 2 | 249 | 255837 | 1763.01 | 683 | 662 | 144.7 |
| B | 0 | 213 | 65981 | 451.29 | 683 | 662 | 144.7 |
| C | 0 | 240 | 3417937 | 19742.24 | 625 | 619 | 173.1 |
| C | 15 | 224 | 1314604 | 7591.04 | 625 | 619 | 173.1 |
| C | 1 | 241 | 182059 | 1048.2 | 625 | 619 | 173.1 |
| D | 15 | 125 | 1377785 | 7108.56 | 669 | 640 | 193.7 |
| D | 2 | 62 | 521917 | 2690.73 | 669 | 640 | 193.7 |
| D | 10 | 181 | 329252 | 1696.23 | 669 | 640 | 193.7 |
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 |  |