Observation information
- date-obs: 2018-07-03
- time-obs: 13:40:38.577400000
- date-end: 2018-07-03
- time-end: 21:51:38.532100000
- obs_id: T02_052T01_9000002208
- exposure: 15329.4099428
- sourceid: AT2018cow
- observer: varunb
- ra_pnt: 244.0009
- dec_pnt: 22.26801
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1T02_052T01_9000002208cztM0_level2_bc.evt
| modeM0/AS1T02_052T01_9000002208cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,289,537,280 | 313,623,360 |
Size | 1.2 GB
| 299.1 MB
|
Events in quadrant A | 5,441,381 | 2,002,773 |
Events in quadrant B | 8,228,274 | 1,934,476 |
Events in quadrant C | 7,218,418 | 1,936,411 |
Events in quadrant D | 16,313,100 | 1,756,986 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 21 | 0 |
B | 0 | 21 | 0 |
C | 0 | 21 | 0 |
D | 0 | 21 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 556 | 0 |
B | 0 | 556 | 0 |
C | 0 | 556 | 0 |
D | 0 | 556 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 56203 | 0 |
B | 0 | 67010 | 0 |
C | 0 | 61797 | 0 |
D | 0 | 89952 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 27130 | 358 | 1.319572% |
B | 27130 | 1031 | 3.800221% |
C | 27130 | 601 | 2.215260% |
D | 27130 | 3291 | 12.130483% |
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 | 29462 | 27133 | 2 | 2 | 0.01% | 0.01% |  |
B | 29462 | 27134 | 86 | 86 | 0.29% | 0.32% |  |
C | 29462 | 27132 | 65 | 65 | 0.22% | 0.24% |  |
D | 29462 | 27133 | 1635 | 1635 | 5.55% | 6.03% |  |
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 | 102021 | 328.57 | 1373 | 1341 | 306.4 |
A | 15 | 69 | 21837 | 66.89 | 1373 | 1341 | 306.4 |
A | 4 | 2 | 16264 | 48.7 | 1373 | 1341 | 306.4 |
B | 10 | 16 | 2351835 | 8976.95 | 1342 | 1301 | 261.8 |
B | 0 | 189 | 260544 | 990.08 | 1342 | 1301 | 261.8 |
B | 0 | 219 | 202972 | 770.2 | 1342 | 1301 | 261.8 |
C | 9 | 236 | 1437293 | 4776.38 | 1325 | 1301 | 300.6 |
C | 3 | 233 | 549777 | 1824.33 | 1325 | 1301 | 300.6 |
C | 10 | 22 | 28770 | 91.37 | 1325 | 1301 | 300.6 |
D | 7 | 254 | 10733026 | 35280.56 | 1286 | 1245 | 304.2 |
D | 10 | 70 | 217832 | 712.03 | 1286 | 1245 | 304.2 |
D | 13 | 249 | 142918 | 465.75 | 1286 | 1245 | 304.2 |
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 |  |