Observation information
- date-obs: 2018-07-19
- time-obs: 22:13:03.387800000
- date-end: 2018-07-20
- time-end: 00:33:33.391500000
- obs_id: T02_068T01_9000002238
- exposure: 3828.73020622
- 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_15184cztM0_level2.evt
| modeM0/AS1T02_068T01_9000002238_15184cztM0_level2_quad_clean.evt
|
| Size (bytes) | 442,463,040 | 89,573,760 |
| Size | 422.0 MB
| 85.4 MB
|
| Events in quadrant A | 3,365,877 | 579,572 |
| Events in quadrant B | 3,130,875 | 597,959 |
| Events in quadrant C | 3,320,344 | 571,778 |
| Events in quadrant D | 3,168,532 | 537,378 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 23 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14137 | 3 |
| B | 0 | 12996 | 2 |
| C | 0 | 13522 | 2 |
| D | 0 | 13559 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6094 | 37 | 0.607155% |
| B | 6094 | 28 | 0.459468% |
| C | 6094 | 15 | 0.246144% |
| D | 6094 | 63 | 1.033804% |
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 | 7470 | 6096 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7470 | 6096 | 0 | 0 | 0.00% | 0.00% |  |
| C | 7470 | 6096 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7470 | 6096 | 38 | 38 | 0.51% | 0.62% |  |
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 | 364043 | 2325.19 | 777 | 763 | 156.2 |
| A | 12 | 189 | 17276 | 105.69 | 777 | 763 | 156.2 |
| A | 0 | 226 | 6710 | 38.06 | 777 | 763 | 156.2 |
| B | 12 | 111 | 17102 | 111.23 | 787 | 768 | 146.9 |
| B | 3 | 209 | 15907 | 103.09 | 787 | 768 | 146.9 |
| B | 11 | 111 | 14304 | 92.17 | 787 | 768 | 146.9 |
| C | 3 | 233 | 376941 | 2162.92 | 755 | 761 | 173.9 |
| C | 13 | 61 | 5476 | 27.11 | 755 | 761 | 173.9 |
| C | 7 | 247 | 2262 | 8.63 | 755 | 761 | 173.9 |
| D | 2 | 33 | 232884 | 1282.38 | 744 | 724 | 181.0 |
| D | 13 | 249 | 56613 | 308.71 | 744 | 724 | 181.0 |
| D | 2 | 120 | 26802 | 144.05 | 744 | 724 | 181.0 |
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 |  |