Observation information
- date-obs: 2018-07-20
- time-obs: 19:19:52.373900000
- date-end: 2018-07-21
- time-end: 11:53:30.356100000
- obs_id: T02_069T01_9000002242
- exposure: 29278.0385194
- sourceid: AT2018cow
- observer: varunb
- ra_pnt: 244.0009
- dec_pnt: 22.26801
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1T02_069T01_9000002242cztM0_level2_bc.evt
| modeM0/AS1T02_069T01_9000002242cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,943,006,400 | 618,033,600 |
Size | 1.8 GB
| 589.4 MB
|
Events in quadrant A | 10,786,961 | 3,969,533 |
Events in quadrant B | 18,210,843 | 3,810,182 |
Events in quadrant C | 14,515,822 | 3,851,640 |
Events in quadrant D | 12,005,338 | 3,741,599 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 996 | 0 |
B | 0 | 996 | 0 |
C | 0 | 996 | 0 |
D | 0 | 996 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 63 | 0 |
B | 0 | 63 | 0 |
C | 0 | 63 | 0 |
D | 0 | 64 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 102594 | 0 |
B | 0 | 134703 | 0 |
C | 0 | 118799 | 0 |
D | 0 | 107464 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 48732 | 747 | 1.532874% |
B | 48732 | 4085 | 8.382582% |
C | 48732 | 2245 | 4.606829% |
D | 48732 | 932 | 1.912501% |
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 | 59366 | 48713 | 7 | 7 | 0.01% | 0.01% |  |
B | 59366 | 48707 | 341 | 341 | 0.57% | 0.70% |  |
C | 59366 | 48715 | 197 | 197 | 0.33% | 0.40% |  |
D | 59366 | 48717 | 104 | 104 | 0.18% | 0.21% |  |
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 | 859147 | 1554.09 | 2523 | 2471 | 551.2 |
A | 13 | 248 | 112732 | 200.02 | 2523 | 2471 | 551.2 |
A | 15 | 239 | 75197 | 131.93 | 2523 | 2471 | 551.2 |
B | 3 | 112 | 6905561 | 14907.24 | 2469 | 2406 | 463.1 |
B | 3 | 64 | 583790 | 1255.49 | 2469 | 2406 | 463.1 |
B | 0 | 229 | 343774 | 737.18 | 2469 | 2406 | 463.1 |
C | 3 | 233 | 4832671 | 9023.08 | 2430 | 2398 | 535.3 |
C | 7 | 247 | 149037 | 273.93 | 2430 | 2398 | 535.3 |
C | 13 | 61 | 14454 | 22.52 | 2430 | 2398 | 535.3 |
D | 2 | 33 | 604103 | 1050.76 | 2469 | 2379 | 572.7 |
D | 13 | 172 | 581829 | 1011.87 | 2469 | 2379 | 572.7 |
D | 13 | 104 | 276131 | 478.04 | 2469 | 2379 | 572.7 |
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 |  |