Observation information
- date-obs: 2025-08-13
- time-obs: 13:30:22.194700000
- date-end: 2025-08-13
- time-end: 15:23:24.002300000
- obs_id: C09_011T09_9000006494
- exposure: 1174.29581887
- 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_011T09_9000006494_53426cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53426cztM0_level2_quad_clean.evt
|
| Size (bytes) | 857,940,480 | 62,015,040 |
| Size | 818.2 MB
| 59.1 MB
|
| Events in quadrant A | 3,774,174 | 555,919 |
| Events in quadrant B | 9,610,209 | 327,181 |
| Events in quadrant C | 13,556,426 | 111,123 |
| Events in quadrant D | 4,380,980 | 488,872 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 114 | 0 |
| B | 0 | 114 | 0 |
| C | 0 | 114 | 0 |
| D | 0 | 114 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15030 | 1 |
| B | 0 | 32470 | 1 |
| C | 0 | 43913 | 1 |
| D | 0 | 16951 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5642 | 278 | 4.927331% |
| B | 5643 | 2930 | 51.922736% |
| C | 5643 | 4586 | 81.268829% |
| D | 5643 | 354 | 6.273259% |
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 | 6781 | 5641 | 206 | 206 | 3.04% | 3.65% |  |
| B | 6782 | 5642 | 2411 | 2411 | 35.55% | 42.73% |  |
| C | 6782 | 5642 | 4518 | 4518 | 66.62% | 80.08% |  |
| D | 6783 | 5643 | 241 | 241 | 3.55% | 4.27% |  |
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 | 15 | 174 | 762690 | 5075.73 | 600 | 584 | 150.1 |
| A | 8 | 249 | 175027 | 1161.81 | 600 | 584 | 150.1 |
| A | 3 | 63 | 117067 | 775.79 | 600 | 584 | 150.1 |
| B | 4 | 206 | 3631285 | 36662.31 | 468 | 452 | 99.0 |
| B | 4 | 171 | 1889233 | 19071.95 | 468 | 452 | 99.0 |
| B | 0 | 171 | 1350087 | 13627.93 | 468 | 452 | 99.0 |
| C | 1 | 241 | 8785727 | 122357.58 | 258 | 256 | 71.8 |
| C | 9 | 38 | 1793897 | 24980.51 | 258 | 256 | 71.8 |
| C | 15 | 224 | 1515289 | 21100.26 | 258 | 256 | 71.8 |
| D | 0 | 18 | 784779 | 4714.89 | 581 | 553 | 166.3 |
| D | 12 | 1 | 273526 | 1641.16 | 581 | 553 | 166.3 |
| D | 2 | 120 | 257962 | 1547.58 | 581 | 553 | 166.3 |
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 |  |