Observation information
- date-obs: 2018-01-31
- time-obs: 15:00:00.026100000
- date-end: 2018-01-31
- time-end: 17:00:53.001500000
- obs_id: A04_174T01_9000001876
- exposure: 4392.43630666
- sourceid: Crab
- observer: mithunnps
- ra_pnt: 83.63308
- dec_pnt: 22.0145
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_174T01_9000001876_12678cztM0_level2.evt
| modeM0/AS1A04_174T01_9000001876_12678cztM0_level2_quad_clean.evt
|
| Size (bytes) | 521,429,760 | 104,575,680 |
| Size | 497.3 MB
| 99.7 MB
|
| Events in quadrant A | 3,083,923 | 725,024 |
| Events in quadrant B | 5,639,758 | 638,702 |
| Events in quadrant C | 2,957,627 | 707,147 |
| Events in quadrant D | 3,700,700 | 674,372 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12917 | 2 |
| B | 0 | 20759 | 1 |
| C | 0 | 12543 | 1 |
| D | 0 | 14861 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6038 | 97 | 1.606492% |
| B | 6038 | 1014 | 16.793640% |
| C | 6038 | 63 | 1.043392% |
| D | 6038 | 252 | 4.173567% |
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 | 7253 | 6038 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7253 | 6038 | 794 | 794 | 10.95% | 13.15% |  |
| C | 7254 | 6039 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7253 | 6038 | 105 | 105 | 1.45% | 1.74% |  |
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 | 12 | 189 | 23355 | 139.42 | 794 | 781 | 161.9 |
| A | 9 | 143 | 8792 | 49.48 | 794 | 781 | 161.9 |
| A | 0 | 226 | 7251 | 39.96 | 794 | 781 | 161.9 |
| B | 4 | 239 | 1951195 | 14362.65 | 723 | 707 | 135.8 |
| B | 3 | 64 | 590457 | 4342.7 | 723 | 707 | 135.8 |
| B | 3 | 209 | 188668 | 1384.07 | 723 | 707 | 135.8 |
| C | 13 | 61 | 5646 | 28.05 | 758 | 766 | 174.0 |
| C | 8 | 222 | 2191 | 8.19 | 758 | 766 | 174.0 |
| C | 3 | 202 | 1958 | 6.85 | 758 | 766 | 174.0 |
| D | 1 | 52 | 581029 | 3248.03 | 753 | 740 | 178.7 |
| D | 10 | 199 | 81336 | 451.12 | 753 | 740 | 178.7 |
| D | 2 | 14 | 43066 | 236.91 | 753 | 740 | 178.7 |
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 |  |