Observation information
- date-obs: 2025-07-24
- time-obs: 04:06:10.050600000
- date-end: 2025-07-24
- time-end: 06:04:42.989400000
- obs_id: C09_011T07_9000006488
- exposure: 4351.33058017
- 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_53123cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53123cztM0_level2_quad_clean.evt
|
| Size (bytes) | 801,129,600 | 73,923,840 |
| Size | 764.0 MB
| 70.5 MB
|
| Events in quadrant A | 8,871,453 | 410,196 |
| Events in quadrant B | 8,119,657 | 508,548 |
| Events in quadrant C | 5,664,730 | 486,164 |
| Events in quadrant D | 6,534,900 | 412,347 |
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 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 30578 | 8 |
| B | 0 | 28368 | 38 |
| C | 0 | 21072 | 11 |
| D | 0 | 23736 | 24 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6026 | 1986 | 32.957186% |
| B | 6018 | 1285 | 21.352609% |
| C | 6024 | 746 | 12.383798% |
| D | 6022 | 1339 | 22.235138% |
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 | 7112 | 6026 | 1735 | 1735 | 24.40% | 28.79% |  |
| B | 7112 | 6025 | 944 | 944 | 13.27% | 15.67% |  |
| C | 7112 | 6025 | 695 | 695 | 9.77% | 11.54% |  |
| D | 7112 | 6024 | 1264 | 1264 | 17.77% | 20.98% |  |
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 | 9 | 191 | 6202219 | 46005.46 | 540 | 527 | 134.8 |
| A | 8 | 245 | 358564 | 2655.99 | 540 | 527 | 134.8 |
| A | 8 | 246 | 32989 | 240.81 | 540 | 527 | 134.8 |
| B | 10 | 254 | 5136776 | 41258.6 | 582 | 563 | 124.5 |
| B | 4 | 171 | 130062 | 1040.25 | 582 | 563 | 124.5 |
| B | 1 | 255 | 128479 | 1027.53 | 582 | 563 | 124.5 |
| C | 15 | 224 | 1596849 | 10212.14 | 565 | 561 | 156.3 |
| C | 0 | 240 | 1144818 | 7320.3 | 565 | 561 | 156.3 |
| C | 9 | 38 | 313865 | 2004.34 | 565 | 561 | 156.3 |
| D | 12 | 3 | 3201023 | 21769.6 | 507 | 481 | 147.0 |
| D | 3 | 224 | 494433 | 3359.79 | 507 | 481 | 147.0 |
| D | 10 | 172 | 347295 | 2358.98 | 507 | 481 | 147.0 |
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 |  |