Observation information
- date-obs: 2025-08-09
- time-obs: 13:57:33.840600000
- date-end: 2025-08-09
- time-end: 15:56:48.822700000
- obs_id: C09_011T09_9000006494
- exposure: 3025.03936386
- 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_53367cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53367cztM0_level2_quad_clean.evt
|
| Size (bytes) | 682,119,360 | 79,597,440 |
| Size | 650.5 MB
| 75.9 MB
|
| Events in quadrant A | 3,853,592 | 585,726 |
| Events in quadrant B | 5,250,831 | 587,922 |
| Events in quadrant C | 11,434,902 | 279,387 |
| Events in quadrant D | 4,240,121 | 532,942 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15759 | 1 |
| B | 0 | 19802 | 1 |
| C | 0 | 38126 | 1 |
| D | 0 | 16689 | 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 | 6065 | 293 | 4.830998% |
| B | 6065 | 739 | 12.184666% |
| C | 6065 | 3352 | 55.267931% |
| D | 6065 | 203 | 3.347073% |
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 | 7155 | 6066 | 196 | 196 | 2.74% | 3.23% |  |
| B | 7155 | 6066 | 384 | 384 | 5.37% | 6.33% |  |
| C | 7155 | 6066 | 2952 | 2952 | 41.26% | 48.66% |  |
| D | 7155 | 6066 | 141 | 141 | 1.97% | 2.32% |  |
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 | 0 | 8 | 404630 | 2508.09 | 643 | 628 | 161.1 |
| A | 4 | 254 | 287446 | 1780.6 | 643 | 628 | 161.1 |
| A | 15 | 174 | 278287 | 1723.74 | 643 | 628 | 161.1 |
| B | 4 | 206 | 1230923 | 9366.49 | 619 | 599 | 131.4 |
| B | 4 | 171 | 674426 | 5129.87 | 619 | 599 | 131.4 |
| B | 0 | 171 | 230195 | 1747.92 | 619 | 599 | 131.4 |
| C | 15 | 178 | 5070069 | 39713.17 | 466 | 463 | 127.7 |
| C | 15 | 224 | 1452466 | 11374.38 | 466 | 463 | 127.7 |
| C | 1 | 241 | 1222715 | 9574.61 | 466 | 463 | 127.7 |
| D | 0 | 18 | 362669 | 2016.74 | 629 | 600 | 179.5 |
| D | 2 | 153 | 276640 | 1537.56 | 629 | 600 | 179.5 |
| D | 8 | 176 | 253965 | 1411.26 | 629 | 600 | 179.5 |
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 |  |