Observation information
- date-obs: 2018-07-12
- time-obs: 18:52:37.268700000
- date-end: 2018-07-13
- time-end: 12:31:51.302700000
- obs_id: T02_065T01_9000002218
- exposure: 30945.022782
- sourceid: AT2018cow
- observer: varunb
- ra_pnt: 244.0009
- dec_pnt: 22.26801
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1T02_065T01_9000002218cztM0_level2_bc.evt
| modeM0/AS1T02_065T01_9000002218cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,862,876,160 | 666,720,000 |
Size | 1.7 GB
| 635.8 MB
|
Events in quadrant A | 11,377,344 | 4,201,633 |
Events in quadrant B | 12,472,928 | 4,246,210 |
Events in quadrant C | 16,004,834 | 4,085,067 |
Events in quadrant D | 12,866,676 | 3,943,849 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 112523 | 0 |
B | 0 | 115462 | 0 |
C | 0 | 127760 | 0 |
D | 0 | 118194 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 92 | 0 |
B | 0 | 92 | 0 |
C | 0 | 92 | 0 |
D | 0 | 92 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1108 | 0 |
B | 0 | 1108 | 0 |
C | 0 | 1108 | 0 |
D | 0 | 1108 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 54175 | 846 | 1.561606% |
B | 54175 | 1047 | 1.932626% |
C | 54175 | 706 | 1.303184% |
D | 54175 | 1246 | 2.299954% |
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 | 63556 | 54179 | 2 | 2 | 0.00% | 0.00% | ![](noisytime.Q0.png) |
B | 63556 | 54177 | 26 | 26 | 0.04% | 0.05% | ![](noisytime.Q1.png) |
C | 63556 | 54182 | 0 | 0 | 0.00% | 0.00% | ![](noisytime.Q2.png) |
D | 63556 | 54179 | 406 | 406 | 0.64% | 0.75% | ![](noisytime.Q3.png) |
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 | 277618 | 448.02 | 2853 | 2797 | 613.4 |
A | 13 | 248 | 69817 | 109.26 | 2853 | 2797 | 613.4 |
A | 4 | 2 | 47573 | 72.99 | 2853 | 2797 | 613.4 |
B | 3 | 64 | 647907 | 1195.12 | 2887 | 2809 | 539.8 |
B | 10 | 245 | 280738 | 514.89 | 2887 | 2809 | 539.8 |
B | 3 | 209 | 157172 | 285.97 | 2887 | 2809 | 539.8 |
C | 3 | 233 | 4795055 | 7914.9 | 2771 | 2732 | 605.5 |
C | 7 | 247 | 206053 | 335.8 | 2771 | 2732 | 605.5 |
C | 3 | 9 | 143329 | 232.21 | 2771 | 2732 | 605.5 |
D | 9 | 1 | 1412426 | 2264.6 | 2762 | 2665 | 622.5 |
D | 13 | 249 | 230817 | 366.5 | 2762 | 2665 | 622.5 |
D | 2 | 234 | 181494 | 287.27 | 2762 | 2665 | 622.5 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
Quadrant A |
![](dph.Q0.png) |
![](dph.Q1.png) |
Quadrant B |
Quadrant D |
![](dph.Q3.png) |
![](dph.Q2.png) |
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. |
![](countrate_histogram.png) |
![](imageFULL_DPI.png) |
Quadrant-wise count rates
Data is divided into 100 sec bins |
![](countrate_lightcurve.png) |
![](imageFULL_DPI.png) |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
![](countrate_modulerates.Q0.png) |
![](imageQ0.png) |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
![](countrate_modulerates.Q1.png) |
![](imageQ1.png) |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
![](countrate_modulerates.Q2.png) |
![](imageQ2.png) |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
![](countrate_modulerates.Q3.png) |
![](imageQ3.png) |
Housekeeping plots
Parameter |
Plot |
CZT HV Monitor | ![](hkCZTHV_Monitor.png) |
D_VDD | ![](hkDVDD.png) |
Temperature 1 | ![](hkTemperature1.png) |
Veto HV Monitor | ![](hkVetoHV_Monitor.png) |
Veto LLD | ![](hkVetoLLD.png) |
Alpha Counter | ![](hk_AlphaCounter.png) |
_CPM_Rate | ![](hk_CPM_Rate.png) |
CZT Counter | ![](hk_CZT_Counter.png) |
+2.5 Volts monitor | ![](hk_POS_2DOT5V_Monitor.png) |
+5 Volts monitor | ![](hk_POS_5V_Monitor.png) |
_ROLL_ROT | ![](hk_ROLL_ROT.png) |
_Roll_DEC | ![](hk_Roll_DEC.png) |
_Roll_RA | ![](hk_Roll_RA.png) |
Veto Counter | ![](hk_VetoCounter.png) |