Observation information
- date-obs: 2025-07-22
- time-obs: 12:10:21.315800000
- date-end: 2025-07-22
- time-end: 14:13:35.301300000
- obs_id: C09_011T07_9000006488
- exposure: 1082.17902613
- 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_53098cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53098cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,202,650,560 | 67,288,320 |
| Size | 1.1 GB
| 64.2 MB
|
| Events in quadrant A | 17,216,934 | 100,737 |
| Events in quadrant B | 4,025,069 | 725,708 |
| Events in quadrant C | 16,967,230 | 105,306 |
| Events in quadrant D | 5,737,563 | 590,347 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 56098 | 0 |
| B | 0 | 17298 | 0 |
| C | 0 | 55376 | 0 |
| D | 0 | 22154 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7394 | 6529 | 88.301325% |
| B | 7395 | 175 | 2.366464% |
| C | 7395 | 6320 | 85.463151% |
| D | 7395 | 500 | 6.761325% |
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 | 7393 | 7393 | 5949 | 5949 | 80.47% | 80.47% |  |
| B | 7395 | 7395 | 112 | 112 | 1.51% | 1.51% |  |
| C | 7394 | 7394 | 5681 | 5681 | 76.83% | 76.83% |  |
| D | 7395 | 7395 | 470 | 470 | 6.36% | 6.36% |  |
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 | 14861197 | 137953.81 | 426 | 415 | 107.7 |
| A | 7 | 206 | 287193 | 2662.18 | 426 | 415 | 107.7 |
| A | 6 | 248 | 136604 | 1264.25 | 426 | 415 | 107.7 |
| B | 2 | 249 | 403476 | 2517.02 | 751 | 726 | 160.0 |
| B | 1 | 207 | 124950 | 776.35 | 751 | 726 | 160.0 |
| B | 0 | 213 | 116856 | 725.77 | 751 | 726 | 160.0 |
| C | 1 | 241 | 8146446 | 92274.96 | 320 | 317 | 88.3 |
| C | 15 | 157 | 5799642 | 65691.63 | 320 | 317 | 88.3 |
| C | 15 | 224 | 1125956 | 12750.63 | 320 | 317 | 88.3 |
| D | 10 | 172 | 1232966 | 5865.2 | 728 | 695 | 210.1 |
| D | 2 | 249 | 455124 | 2162.93 | 728 | 695 | 210.1 |
| D | 0 | 5 | 284029 | 1348.57 | 728 | 695 | 210.1 |
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 |  |