Observation information
- date-obs: 2018-03-14
- time-obs: 11:14:59.801900000
- date-end: 2018-03-15
- time-end: 13:21:55.810000000
- obs_id: G08_023T01_9000001978
- exposure: 56424.1164755
- sourceid: centaurus A
- observer: sreekumar
- ra_pnt: 201.6023
- dec_pnt: -42.8446
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1G08_023T01_9000001978cztM0_level2_bc.evt
| modeM0/AS1G08_023T01_9000001978cztM0_level2_quad_clean.evt
|
Size (bytes) | 2,792,116,800 | 1,130,402,880 |
Size | 2.6 GB
| 1.1 GB
|
Events in quadrant A | 19,084,027 | 7,236,894 |
Events in quadrant B | 19,165,413 | 7,420,053 |
Events in quadrant C | 16,889,750 | 7,204,633 |
Events in quadrant D | 23,876,597 | 6,802,826 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 176880 | 0 |
B | 0 | 176679 | 0 |
C | 0 | 169411 | 0 |
D | 0 | 193307 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1658 | 0 |
B | 0 | 1658 | 0 |
C | 0 | 1658 | 0 |
D | 0 | 1658 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 126 | 0 |
B | 0 | 126 | 0 |
C | 0 | 126 | 0 |
D | 0 | 126 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 81327 | 1484 | 1.824732% |
B | 81327 | 1560 | 1.918182% |
C | 81327 | 839 | 1.031638% |
D | 81327 | 2536 | 3.118276% |
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 | 94018 | 81332 | 120 | 120 | 0.13% | 0.15% |  |
B | 94018 | 81331 | 50 | 50 | 0.05% | 0.06% |  |
C | 94018 | 81330 | 20 | 20 | 0.02% | 0.02% |  |
D | 94018 | 81329 | 227 | 227 | 0.24% | 0.28% |  |
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 | 8 | 15 | 2032830 | 2240.63 | 4149 | 4059 | 905.4 |
A | 9 | 143 | 783817 | 861.19 | 4149 | 4059 | 905.4 |
A | 1 | 162 | 217080 | 235.27 | 4149 | 4059 | 905.4 |
B | 3 | 64 | 1600243 | 1997.9 | 4251 | 4147 | 798.9 |
B | 4 | 142 | 206378 | 253.14 | 4251 | 4147 | 798.9 |
B | 3 | 209 | 200195 | 245.4 | 4251 | 4147 | 798.9 |
C | 6 | 96 | 606364 | 665.45 | 4108 | 4059 | 905.1 |
C | 15 | 208 | 115448 | 123.07 | 4108 | 4059 | 905.1 |
C | 3 | 233 | 51044 | 51.91 | 4108 | 4059 | 905.1 |
D | 1 | 52 | 2880840 | 3079.32 | 4053 | 3914 | 934.3 |
D | 5 | 222 | 2010179 | 2147.41 | 4053 | 3914 | 934.3 |
D | 8 | 195 | 1028896 | 1097.09 | 4053 | 3914 | 934.3 |
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 |  |