Observation information
- date-obs: 2018-07-19
- time-obs: 02:05:59.323800000
- date-end: 2018-07-20
- time-end: 16:40:37.377000000
- obs_id: T02_068T01_9000002238
- exposure: 73328.0323384
- 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_9000002238cztM0_level2_bc.evt
| modeM0/AS1T02_068T01_9000002238cztM0_level2_quad_clean.evt
|
Size (bytes) | 4,457,655,360 | 1,509,609,600 |
Size | 4.2 GB
| 1.4 GB
|
Events in quadrant A | 30,018,639 | 9,618,744 |
Events in quadrant B | 33,403,105 | 9,410,619 |
Events in quadrant C | 33,033,328 | 9,433,862 |
Events in quadrant D | 30,463,867 | 9,129,674 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 2416 | 0 |
B | 0 | 2416 | 0 |
C | 0 | 2416 | 0 |
D | 0 | 2416 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 267072 | 0 |
B | 0 | 285265 | 0 |
C | 0 | 270036 | 0 |
D | 0 | 266301 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 162 | 0 |
B | 0 | 162 | 0 |
C | 0 | 162 | 0 |
D | 0 | 163 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 118663 | 2058 | 1.734323% |
B | 118663 | 6864 | 5.784448% |
C | 118663 | 1574 | 1.326445% |
D | 118663 | 3375 | 2.844189% |
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 | 138880 | 118671 | 11 | 11 | 0.01% | 0.01% |  |
B | 138880 | 118662 | 538 | 538 | 0.39% | 0.45% |  |
C | 138880 | 118667 | 1 | 1 | 0.00% | 0.00% |  |
D | 138880 | 118667 | 854 | 854 | 0.61% | 0.72% |  |
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 | 5408394 | 4088.87 | 6047 | 5922 | 1321.3 |
A | 12 | 189 | 873487 | 656.62 | 6047 | 5922 | 1321.3 |
A | 0 | 253 | 234976 | 173.36 | 6047 | 5922 | 1321.3 |
B | 3 | 112 | 8244583 | 7319.17 | 5994 | 5837 | 1125.6 |
B | 3 | 64 | 774804 | 683.14 | 5994 | 5837 | 1125.6 |
B | 4 | 48 | 322686 | 281.48 | 5994 | 5837 | 1125.6 |
C | 3 | 233 | 9719617 | 7472.86 | 5927 | 5844 | 1299.9 |
C | 13 | 61 | 34725 | 22.22 | 5927 | 5844 | 1299.9 |
C | 14 | 234 | 34255 | 21.86 | 5927 | 5844 | 1299.9 |
D | 2 | 33 | 5110355 | 3709.78 | 5929 | 5706 | 1376.0 |
D | 10 | 70 | 479893 | 344.61 | 5929 | 5706 | 1376.0 |
D | 2 | 234 | 429108 | 307.71 | 5929 | 5706 | 1376.0 |
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 |  |