Observation information
- date-obs: 2025-06-16
- time-obs: 03:29:49.483700000
- date-end: 2025-06-16
- time-end: 05:22:52.469200000
- obs_id: C09_011T06_9000006478
- exposure: 3143.99738944
- 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_011T06_9000006478_52558cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52558cztM0_level2_quad_clean.evt
|
| Size (bytes) | 820,330,560 | 71,683,200 |
| Size | 782.3 MB
| 68.4 MB
|
| Events in quadrant A | 2,767,195 | 586,496 |
| Events in quadrant B | 6,742,319 | 515,643 |
| Events in quadrant C | 8,948,885 | 359,026 |
| Events in quadrant D | 11,431,318 | 279,834 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13058 | 1 |
| B | 0 | 24247 | 1 |
| C | 0 | 30993 | 4 |
| D | 0 | 38249 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6148 | 66 | 1.073520% |
| B | 6149 | 1271 | 20.670028% |
| C | 6148 | 2304 | 37.475602% |
| D | 6148 | 3269 | 53.171763% |
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 | 6783 | 6149 | 17 | 17 | 0.25% | 0.28% |  |
| B | 6784 | 6150 | 967 | 967 | 14.25% | 15.72% |  |
| C | 6783 | 6149 | 2016 | 2016 | 29.72% | 32.79% |  |
| D | 6782 | 6148 | 2953 | 2953 | 43.54% | 48.03% |  |
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 | 3 | 46 | 79682 | 494.58 | 637 | 619 | 159.9 |
| A | 3 | 14 | 37096 | 228.18 | 637 | 619 | 159.9 |
| A | 13 | 248 | 25404 | 155.04 | 637 | 619 | 159.9 |
| B | 10 | 44 | 2705147 | 22047.46 | 574 | 554 | 122.7 |
| B | 4 | 170 | 1460921 | 11904.71 | 574 | 554 | 122.7 |
| B | 4 | 81 | 55128 | 444.88 | 574 | 554 | 122.7 |
| C | 15 | 248 | 5802000 | 41434.79 | 502 | 497 | 140.0 |
| C | 4 | 5 | 355503 | 2535.48 | 502 | 497 | 140.0 |
| C | 13 | 3 | 304653 | 2172.31 | 502 | 497 | 140.0 |
| D | 6 | 42 | 5528515 | 41685.37 | 456 | 435 | 132.6 |
| D | 8 | 176 | 1792472 | 13513.14 | 456 | 435 | 132.6 |
| D | 2 | 62 | 1177450 | 8875.47 | 456 | 435 | 132.6 |
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 |  |