Observation information
- date-obs: 2018-08-28
- time-obs: 02:35:18.762000000
- date-end: 2018-08-28
- time-end: 12:41:45.714600000
- obs_id: G08_028T01_9000002334
- exposure: 19637.9952587
- 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_9000002334cztM0_level2_bc.evt
| modeM0/AS1G08_028T01_9000002334cztM0_level2_quad_clean.evt
|
Size (bytes) | 995,656,320 | 406,071,360 |
Size | 949.5 MB
| 387.3 MB
|
Events in quadrant A | 6,393,576 | 2,549,260 |
Events in quadrant B | 7,019,897 | 2,618,037 |
Events in quadrant C | 6,412,991 | 2,486,211 |
Events in quadrant D | 8,121,674 | 2,429,694 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 42 | 0 |
B | 0 | 42 | 0 |
C | 0 | 42 | 0 |
D | 0 | 42 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 656 | 0 |
B | 0 | 656 | 0 |
C | 0 | 656 | 0 |
D | 0 | 656 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 66606 | 0 |
B | 0 | 67835 | 0 |
C | 0 | 66812 | 0 |
D | 0 | 71219 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 32258 | 617 | 1.912704% |
B | 32258 | 731 | 2.266105% |
C | 32258 | 701 | 2.173104% |
D | 32258 | 683 | 2.117304% |
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 | 36389 | 32261 | 0 | 0 | 0.00% | 0.00% |  |
B | 36389 | 32261 | 0 | 0 | 0.00% | 0.00% |  |
C | 36389 | 32260 | 1 | 1 | 0.00% | 0.00% |  |
D | 36389 | 32261 | 104 | 104 | 0.29% | 0.32% |  |
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 | 9 | 143 | 33527 | 88.96 | 1642 | 1605 | 358.9 |
A | 15 | 239 | 28428 | 74.75 | 1642 | 1605 | 358.9 |
A | 13 | 254 | 11746 | 28.26 | 1642 | 1605 | 358.9 |
B | 3 | 209 | 147474 | 464.93 | 1676 | 1633 | 313.7 |
B | 3 | 64 | 119714 | 376.43 | 1676 | 1633 | 313.7 |
B | 4 | 216 | 54373 | 168.13 | 1676 | 1633 | 313.7 |
C | 3 | 233 | 129423 | 340.66 | 1598 | 1590 | 375.2 |
C | 7 | 247 | 73861 | 192.6 | 1598 | 1590 | 375.2 |
C | 15 | 127 | 42336 | 108.58 | 1598 | 1590 | 375.2 |
D | 1 | 52 | 1569721 | 3796.17 | 1604 | 1560 | 413.1 |
D | 10 | 70 | 132591 | 317.2 | 1604 | 1560 | 413.1 |
D | 2 | 234 | 120004 | 286.73 | 1604 | 1560 | 413.1 |
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 |  |