Observation information
- date-obs: 2018-08-14
- time-obs: 10:31:24.250400000
- date-end: 2018-08-14
- time-end: 19:03:45.251300000
- obs_id: G08_028T01_9000002306
- exposure: 18841.5004808
- 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_9000002306cztM0_level2_bc.evt
| modeM0/AS1G08_028T01_9000002306cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,026,515,520 | 392,077,440 |
Size | 979.0 MB
| 373.9 MB
|
Events in quadrant A | 5,829,222 | 2,567,602 |
Events in quadrant B | 6,501,636 | 2,578,177 |
Events in quadrant C | 7,535,157 | 2,444,155 |
Events in quadrant D | 9,332,892 | 2,385,543 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 31 | 0 |
B | 0 | 31 | 0 |
C | 0 | 31 | 0 |
D | 0 | 31 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 58053 | 0 |
B | 0 | 60348 | 0 |
C | 0 | 64094 | 0 |
D | 0 | 68843 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 566 | 0 |
B | 0 | 566 | 0 |
C | 0 | 566 | 0 |
D | 0 | 566 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 27627 | 578 | 2.092156% |
B | 27627 | 766 | 2.772650% |
C | 27627 | 1571 | 5.686466% |
D | 27627 | 1213 | 4.390632% |
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 | 30743 | 27629 | 3 | 3 | 0.01% | 0.01% |  |
B | 30743 | 27625 | 2 | 2 | 0.01% | 0.01% |  |
C | 30743 | 27627 | 52 | 52 | 0.17% | 0.19% |  |
D | 30742 | 27626 | 324 | 324 | 1.05% | 1.17% |  |
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 | 40216 | 119.11 | 1490 | 1461 | 325.4 |
A | 15 | 223 | 25795 | 74.79 | 1490 | 1461 | 325.4 |
A | 7 | 16 | 16853 | 47.31 | 1490 | 1461 | 325.4 |
B | 4 | 48 | 210955 | 739.11 | 1492 | 1457 | 283.4 |
B | 0 | 189 | 145787 | 509.2 | 1492 | 1457 | 283.4 |
B | 3 | 64 | 75613 | 261.62 | 1492 | 1457 | 283.4 |
C | 3 | 233 | 1961220 | 5935.32 | 1413 | 1407 | 330.2 |
C | 7 | 247 | 44090 | 129.27 | 1413 | 1407 | 330.2 |
C | 0 | 207 | 38339 | 111.85 | 1413 | 1407 | 330.2 |
D | 15 | 0 | 1312617 | 3896.09 | 1452 | 1401 | 336.5 |
D | 1 | 52 | 1070567 | 3176.87 | 1452 | 1401 | 336.5 |
D | 5 | 222 | 302842 | 895.69 | 1452 | 1401 | 336.5 |
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 |  |