Observation information
- date-obs: 2018-07-19
- time-obs: 05:04:05.392000000
- date-end: 2018-07-19
- time-end: 07:09:00.395200000
- obs_id: T02_068T01_9000002238
- exposure: 3588.38920593
- 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_15173cztM0_level2.evt
| modeM0/AS1T02_068T01_9000002238_15173cztM0_level2_quad_clean.evt
|
| Size (bytes) | 595,298,880 | 77,163,840 |
| Size | 567.7 MB
| 73.6 MB
|
| Events in quadrant A | 3,952,861 | 460,888 |
| Events in quadrant B | 3,632,310 | 467,931 |
| Events in quadrant C | 4,132,209 | 455,882 |
| Events in quadrant D | 5,810,560 | 437,908 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 0 |
| B | 0 | 1 | 0 |
| C | 0 | 1 | 0 |
| D | 0 | 1 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16641 | 2 |
| B | 0 | 15468 | 1 |
| C | 0 | 16662 | 1 |
| D | 0 | 22364 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7380 | 264 | 3.577236% |
| B | 7380 | 262 | 3.550136% |
| C | 7380 | 181 | 2.452575% |
| D | 7380 | 863 | 11.693767% |
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 | 7496 | 7382 | 8 | 8 | 0.11% | 0.11% |  |
| B | 7496 | 7382 | 4 | 4 | 0.05% | 0.05% |  |
| C | 7496 | 7382 | 1 | 1 | 0.01% | 0.01% |  |
| D | 7496 | 7382 | 649 | 649 | 8.66% | 8.79% |  |
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 | 15 | 239 | 330608 | 1790.72 | 899 | 877 | 184.1 |
| A | 9 | 143 | 89685 | 482.3 | 899 | 877 | 184.1 |
| A | 12 | 189 | 43795 | 233.08 | 899 | 877 | 184.1 |
| B | 3 | 64 | 34716 | 190.97 | 903 | 876 | 177.2 |
| B | 0 | 189 | 25991 | 141.73 | 903 | 876 | 177.2 |
| B | 12 | 111 | 21126 | 114.28 | 903 | 876 | 177.2 |
| C | 3 | 233 | 685868 | 3330.48 | 880 | 883 | 205.7 |
| C | 14 | 234 | 7042 | 29.95 | 880 | 883 | 205.7 |
| C | 13 | 61 | 6257 | 26.13 | 880 | 883 | 205.7 |
| D | 2 | 33 | 2486544 | 11963.25 | 851 | 826 | 207.8 |
| D | 12 | 222 | 30132 | 141.04 | 851 | 826 | 207.8 |
| D | 2 | 16 | 28650 | 133.91 | 851 | 826 | 207.8 |
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 |  |