Observation information
- date-obs: 2018-05-21
- time-obs: 16:25:16.371800000
- date-end: 2018-05-24
- time-end: 12:09:33.244200000
- obs_id: G08_078T01_9000002110
- exposure: 117561.831721
- sourceid: GRS 1915+105
- observer: ravibt
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1G08_078T01_9000002110cztM0_level2_bc.evt
| modeM0/AS1G08_078T01_9000002110cztM0_level2_quad_clean.evt
|
Size (bytes) | 8,059,910,400 | 2,534,129,280 |
Size | 7.5 GB
| 2.4 GB
|
Events in quadrant A | 46,576,819 | 16,094,089 |
Events in quadrant B | 59,722,717 | 15,847,680 |
Events in quadrant C | 49,993,560 | 15,797,386 |
Events in quadrant D | 74,161,385 | 15,282,060 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 4092 | 0 |
B | 0 | 4092 | 0 |
C | 0 | 4092 | 0 |
D | 0 | 4092 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 426015 | 0 |
B | 0 | 486671 | 0 |
C | 0 | 424995 | 0 |
D | 0 | 525180 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 321 | 0 |
B | 0 | 321 | 0 |
C | 0 | 321 | 0 |
D | 0 | 322 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 200528 | 2175 | 1.084637% |
B | 200530 | 10281 | 5.126914% |
C | 200528 | 1606 | 0.800886% |
D | 200529 | 6873 | 3.427434% |
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 | 243858 | 200522 | 51 | 51 | 0.02% | 0.03% |  |
B | 243858 | 200515 | 753 | 753 | 0.31% | 0.38% |  |
C | 243858 | 200530 | 9 | 9 | 0.00% | 0.00% |  |
D | 243858 | 200523 | 783 | 783 | 0.32% | 0.39% |  |
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 | 3616799 | 1572.57 | 10599 | 10409 | 2293.3 |
A | 8 | 15 | 1472599 | 637.59 | 10599 | 10409 | 2293.3 |
A | 9 | 143 | 287053 | 120.63 | 10599 | 10409 | 2293.3 |
B | 10 | 245 | 12764716 | 6426.04 | 10420 | 10145 | 1984.8 |
B | 0 | 229 | 2475318 | 1242.01 | 10420 | 10145 | 1984.8 |
B | 10 | 16 | 1574395 | 788.1 | 10420 | 10145 | 1984.8 |
C | 3 | 233 | 9673069 | 4314.42 | 10239 | 10125 | 2239.7 |
C | 14 | 220 | 156037 | 65.15 | 10239 | 10125 | 2239.7 |
C | 10 | 22 | 73690 | 28.38 | 10239 | 10125 | 2239.7 |
D | 5 | 222 | 10167989 | 4290.15 | 10221 | 9935 | 2367.8 |
D | 12 | 110 | 6750378 | 2846.76 | 10221 | 9935 | 2367.8 |
D | 1 | 52 | 6139452 | 2588.74 | 10221 | 9935 | 2367.8 |
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 |  |