Observation information
- date-obs: 2025-08-10
- time-obs: 14:16:19.630500000
- date-end: 2025-08-10
- time-end: 16:14:40.613300000
- obs_id: C09_011T09_9000006494
- exposure: 622.90391767
- 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_53382cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53382cztM0_level2_quad_clean.evt
|
| Size (bytes) | 784,978,560 | 70,591,680 |
| Size | 748.6 MB
| 67.3 MB
|
| Events in quadrant A | 4,229,253 | 557,908 |
| Events in quadrant B | 5,111,213 | 579,787 |
| Events in quadrant C | 15,309,230 | 59,082 |
| Events in quadrant D | 3,945,490 | 524,588 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 120 | 0 |
| B | 0 | 120 | 0 |
| C | 0 | 120 | 0 |
| D | 0 | 120 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16802 | 1 |
| B | 0 | 19335 | 1 |
| C | 0 | 49378 | 1 |
| D | 0 | 15862 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5956 | 518 | 8.697112% |
| B | 5957 | 779 | 13.077052% |
| C | 5957 | 5417 | 90.935034% |
| D | 5956 | 262 | 4.398925% |
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 | 7101 | 5957 | 372 | 372 | 5.24% | 6.24% |  |
| B | 7102 | 5958 | 464 | 464 | 6.53% | 7.79% |  |
| C | 7102 | 5957 | 5163 | 5163 | 72.70% | 86.67% |  |
| D | 7101 | 5957 | 206 | 206 | 2.90% | 3.46% |  |
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 | 661653 | 4254.33 | 620 | 605 | 155.4 |
| A | 12 | 115 | 655150 | 4212.48 | 620 | 605 | 155.4 |
| A | 5 | 241 | 111799 | 715.62 | 620 | 605 | 155.4 |
| B | 4 | 206 | 1426990 | 11154.8 | 606 | 587 | 127.9 |
| B | 4 | 171 | 566022 | 4421.83 | 606 | 587 | 127.9 |
| B | 10 | 28 | 120340 | 936.5 | 606 | 587 | 127.9 |
| C | 1 | 241 | 11878012 | 191363.04 | 220 | 219 | 62.1 |
| C | 15 | 178 | 1166814 | 18795.0 | 220 | 219 | 62.1 |
| C | 15 | 224 | 691781 | 11141.75 | 220 | 219 | 62.1 |
| D | 2 | 249 | 636908 | 3654.07 | 617 | 588 | 174.1 |
| D | 2 | 153 | 211399 | 1210.58 | 617 | 588 | 174.1 |
| D | 11 | 247 | 122168 | 698.17 | 617 | 588 | 174.1 |
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 |  |