Observation information
- date-obs: 2018-07-20
- time-obs: 12:33:11.381100000
- date-end: 2018-07-20
- time-end: 14:33:01.379200000
- obs_id: T02_068T01_9000002238
- exposure: 4860.94511423
- sourceid: AT2018cow
- observer: lazygun37
- ra_pnt: 244.0009
- dec_pnt: 22.26801
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T02_068T01_9000002238_15192cztM0_level2.evt
| modeM0/AS1T02_068T01_9000002238_15192cztM0_level2_quad_clean.evt
|
| Size (bytes) | 538,309,440 | 94,207,680 |
| Size | 513.4 MB
| 89.8 MB
|
| Events in quadrant A | 2,997,933 | 627,175 |
| Events in quadrant B | 5,761,200 | 576,338 |
| Events in quadrant C | 4,002,252 | 609,082 |
| Events in quadrant D | 3,109,638 | 596,132 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13106 | 2 |
| B | 0 | 21363 | 1 |
| C | 0 | 16459 | 1 |
| D | 0 | 13669 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6360 | 63 | 0.990566% |
| B | 6360 | 1046 | 16.446541% |
| C | 6360 | 58 | 0.911950% |
| D | 6360 | 98 | 1.540881% |
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 | 7191 | 6361 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7191 | 6361 | 690 | 690 | 9.60% | 10.85% |  |
| C | 7191 | 6361 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7191 | 6361 | 43 | 43 | 0.60% | 0.68% |  |
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 | 19780 | 120.98 | 771 | 754 | 157.3 |
| A | 13 | 248 | 15351 | 92.82 | 771 | 754 | 157.3 |
| A | 0 | 226 | 6890 | 39.02 | 771 | 754 | 157.3 |
| B | 3 | 112 | 2876471 | 20771.34 | 714 | 694 | 138.4 |
| B | 4 | 48 | 30088 | 212.31 | 714 | 694 | 138.4 |
| B | 0 | 214 | 19191 | 133.6 | 714 | 694 | 138.4 |
| C | 3 | 233 | 1095244 | 6257.76 | 745 | 748 | 174.9 |
| C | 13 | 61 | 5394 | 26.56 | 745 | 748 | 174.9 |
| C | 8 | 222 | 2323 | 9.01 | 745 | 748 | 174.9 |
| D | 2 | 33 | 191822 | 1034.67 | 749 | 727 | 184.7 |
| D | 2 | 120 | 29150 | 153.89 | 749 | 727 | 184.7 |
| D | 2 | 234 | 25167 | 132.33 | 749 | 727 | 184.7 |
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 |  |