Observation information
- date-obs: 2017-10-21
- time-obs: 08:10:48.595900000
- date-end: 2017-10-21
- time-end: 21:49:34.577200000
- obs_id: A04_042T01_9000001630
- exposure: 23687.3464677
- sourceid: GRS 1915+105
- observer: rodrigue
- ra_pnt: 288.7991
- dec_pnt: 10.94602
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A04_042T01_9000001630cztM0_level2.evt
| modeM0/AS1A04_042T01_9000001630cztM0_level2_quad_clean.evt
|
Size (bytes) | 4,089,283,200 | 467,467,200 |
Size | 3.8 GB
| 445.8 MB
|
Events in quadrant A | 35,659,634 | 2,747,098 |
Events in quadrant B | 28,184,264 | 2,925,770 |
Events in quadrant C | 18,927,080 | 2,945,043 |
Events in quadrant D | 38,268,028 | 2,669,488 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 134070 | 0 |
B | 0 | 111111 | 0 |
C | 0 | 85753 | 0 |
D | 0 | 142795 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 47 | 0 |
B | 0 | 47 | 0 |
C | 0 | 47 | 0 |
D | 0 | 47 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 850 | 0 |
B | 0 | 852 | 0 |
C | 0 | 852 | 0 |
D | 0 | 852 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 41729 | 4383 | 10.503487% |
B | 41771 | 2548 | 6.099926% |
C | 41804 | 312 | 0.746340% |
D | 41782 | 2644 | 6.328084% |
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 | 49127 | 41801 | 2491 | 2491 | 5.07% | 5.96% |  |
B | 49127 | 41849 | 1138 | 1138 | 2.32% | 2.72% |  |
C | 49127 | 41877 | 4 | 4 | 0.01% | 0.01% |  |
D | 49127 | 41861 | 2411 | 2411 | 4.91% | 5.76% |  |
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 | 14 | 238 | 7549325 | 7815.39 | 4766 | 4659 | 965.4 |
A | 8 | 15 | 5021347 | 5196.7 | 4766 | 4659 | 965.4 |
A | 8 | 5 | 4392471 | 4545.26 | 4766 | 4659 | 965.4 |
B | 4 | 239 | 5126227 | 5508.46 | 4909 | 4794 | 929.7 |
B | 10 | 16 | 1515952 | 1625.36 | 4909 | 4794 | 929.7 |
B | 15 | 204 | 543300 | 579.2 | 4909 | 4794 | 929.7 |
C | 14 | 234 | 41736 | 33.02 | 4821 | 4835 | 1117.5 |
C | 9 | 204 | 41328 | 32.66 | 4821 | 4835 | 1117.5 |
C | 13 | 61 | 36224 | 28.09 | 4821 | 4835 | 1117.5 |
D | 10 | 157 | 13889616 | 12141.34 | 4713 | 4573 | 1143.6 |
D | 12 | 16 | 2813669 | 2456.33 | 4713 | 4573 | 1143.6 |
D | 1 | 52 | 640059 | 555.68 | 4713 | 4573 | 1143.6 |
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 |  |