Observation information
- date-obs: 2025-07-21
- time-obs: 23:40:09.414800000
- date-end: 2025-07-22
- time-end: 02:05:22.394400000
- obs_id: C09_011T07_9000006488
- exposure: 3796.31213713
- 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_53091cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53091cztM0_level2_quad_clean.evt
|
| Size (bytes) | 774,558,720 | 85,852,800 |
| Size | 738.7 MB
| 81.9 MB
|
| Events in quadrant A | 12,358,442 | 362,745 |
| Events in quadrant B | 3,700,931 | 686,878 |
| Events in quadrant C | 8,418,674 | 500,175 |
| Events in quadrant D | 3,675,454 | 582,604 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 41324 | 2 |
| B | 0 | 15923 | 3 |
| C | 0 | 29702 | 2 |
| D | 0 | 16026 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6689 | 3271 | 48.901181% |
| B | 6688 | 172 | 2.571770% |
| C | 6688 | 1580 | 23.624402% |
| D | 6688 | 134 | 2.003589% |
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 | 7863 | 6688 | 2966 | 2966 | 37.72% | 44.35% |  |
| B | 7863 | 6689 | 107 | 107 | 1.36% | 1.60% |  |
| C | 7863 | 6689 | 1459 | 1459 | 18.56% | 21.81% |  |
| D | 7863 | 6689 | 111 | 111 | 1.41% | 1.66% |  |
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 | 7873846 | 56935.97 | 545 | 533 | 138.3 |
| A | 6 | 248 | 1321661 | 9553.76 | 545 | 533 | 138.3 |
| A | 12 | 80 | 523446 | 3781.45 | 545 | 533 | 138.3 |
| B | 2 | 249 | 423384 | 2943.44 | 682 | 659 | 143.6 |
| B | 10 | 247 | 127223 | 881.27 | 682 | 659 | 143.6 |
| B | 4 | 216 | 85013 | 587.36 | 682 | 659 | 143.6 |
| C | 15 | 224 | 3187576 | 18836.56 | 607 | 602 | 169.2 |
| C | 1 | 241 | 2180141 | 12882.13 | 607 | 602 | 169.2 |
| C | 9 | 38 | 320939 | 1893.34 | 607 | 602 | 169.2 |
| D | 12 | 17 | 297661 | 1555.19 | 661 | 631 | 191.0 |
| D | 2 | 62 | 170315 | 888.43 | 661 | 631 | 191.0 |
| D | 2 | 153 | 124940 | 650.86 | 661 | 631 | 191.0 |
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 |  |