Observation information
- date-obs: 2018-04-03
- time-obs: 17:49:47.969300000
- date-end: 2018-04-04
- time-end: 02:39:44.954000000
- obs_id: G08_028T01_9000002006
- exposure: 17836.1030539
- sourceid: GRS 1915+105
- observer: jsyadav
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1G08_028T01_9000002006cztM0_level2_bc.evt
| modeM0/AS1G08_028T01_9000002006cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,301,627,520 | 365,725,440 |
Size | 1.2 GB
| 348.8 MB
|
Events in quadrant A | 5,733,629 | 2,355,598 |
Events in quadrant B | 8,015,644 | 2,334,633 |
Events in quadrant C | 6,309,391 | 2,340,885 |
Events in quadrant D | 17,447,704 | 2,118,622 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 570 | 0 |
B | 0 | 570 | 0 |
C | 0 | 570 | 0 |
D | 0 | 570 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 57854 | 0 |
B | 0 | 67719 | 0 |
C | 0 | 58235 | 0 |
D | 0 | 105629 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 38 | 0 |
B | 0 | 38 | 0 |
C | 0 | 38 | 0 |
D | 0 | 38 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 28028 | 151 | 0.538747% |
B | 28028 | 813 | 2.900671% |
C | 28028 | 147 | 0.524476% |
D | 28028 | 4900 | 17.482517% |
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 | 31799 | 28029 | 5 | 5 | 0.02% | 0.02% |  |
B | 31799 | 28029 | 11 | 11 | 0.03% | 0.04% |  |
C | 31799 | 28029 | 0 | 0 | 0.00% | 0.00% |  |
D | 31799 | 28032 | 560 | 560 | 1.76% | 2.00% |  |
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 | 1 | 162 | 77569 | 233.91 | 1439 | 1406 | 325.6 |
A | 15 | 69 | 69074 | 207.82 | 1439 | 1406 | 325.6 |
A | 15 | 157 | 20863 | 59.76 | 1439 | 1406 | 325.6 |
B | 0 | 219 | 844684 | 2994.76 | 1425 | 1385 | 281.6 |
B | 0 | 182 | 719636 | 2550.68 | 1425 | 1385 | 281.6 |
B | 3 | 64 | 381357 | 1349.37 | 1425 | 1385 | 281.6 |
C | 3 | 233 | 674956 | 2136.55 | 1405 | 1389 | 315.3 |
C | 0 | 207 | 65100 | 202.09 | 1405 | 1389 | 315.3 |
C | 8 | 128 | 18999 | 55.86 | 1405 | 1389 | 315.3 |
D | 13 | 122 | 8680503 | 27812.01 | 1313 | 1268 | 312.1 |
D | 5 | 222 | 2538109 | 8129.13 | 1313 | 1268 | 312.1 |
D | 8 | 195 | 629029 | 2011.62 | 1313 | 1268 | 312.1 |
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 |  |