Observation information
- date-obs: 2019-05-10
- time-obs: 01:35:13.325800000
- date-end: 2019-05-10
- time-end: 19:30:45.319300000
- obs_id: A05_142T01_9000002904
- exposure: 31396.8895871
- sourceid: MAXI J1820+070
- observer: JohnPaice
- ra_pnt: 275.0914
- dec_pnt: 7.1853
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A05_142T01_9000002904cztM0_level2_bc.evt
| modeM0/AS1A05_142T01_9000002904cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,846,414,080 | 688,167,360 |
Size | 1.7 GB
| 656.3 MB
|
Events in quadrant A | 11,682,030 | 4,345,475 |
Events in quadrant B | 12,649,461 | 4,384,808 |
Events in quadrant C | 12,804,222 | 4,193,196 |
Events in quadrant D | 15,043,082 | 4,158,709 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1120 | 0 |
B | 0 | 1120 | 0 |
C | 0 | 1120 | 0 |
D | 0 | 1120 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 113859 | 0 |
B | 0 | 117652 | 0 |
C | 0 | 118607 | 0 |
D | 0 | 124677 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 96 | 0 |
B | 0 | 96 | 0 |
C | 0 | 96 | 0 |
D | 0 | 96 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 54828 | 703 | 1.282192% |
B | 54828 | 1069 | 1.949734% |
C | 54828 | 1037 | 1.891369% |
D | 54828 | 911 | 1.661560% |
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 | 64533 | 54822 | 2 | 2 | 0.00% | 0.00% |  |
B | 64533 | 54824 | 12 | 12 | 0.02% | 0.02% |  |
C | 64533 | 54826 | 6 | 6 | 0.01% | 0.01% |  |
D | 64533 | 54825 | 71 | 71 | 0.11% | 0.13% |  |
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 | 5 | 16 | 90259 | 135.57 | 2997 | 2942 | 644.1 |
A | 13 | 254 | 72775 | 108.42 | 2997 | 2942 | 644.1 |
A | 12 | 194 | 19682 | 25.99 | 2997 | 2942 | 644.1 |
B | 7 | 220 | 290232 | 513.88 | 2994 | 2920 | 559.1 |
B | 0 | 244 | 190981 | 336.36 | 2994 | 2920 | 559.1 |
B | 3 | 64 | 182107 | 320.49 | 2994 | 2920 | 559.1 |
C | 3 | 233 | 1308764 | 1972.3 | 2849 | 2835 | 662.1 |
C | 7 | 247 | 309752 | 463.53 | 2849 | 2835 | 662.1 |
C | 5 | 112 | 174225 | 258.84 | 2849 | 2835 | 662.1 |
D | 1 | 52 | 2474679 | 3698.99 | 2942 | 2843 | 668.2 |
D | 12 | 218 | 295353 | 437.73 | 2942 | 2843 | 668.2 |
D | 2 | 16 | 280953 | 416.18 | 2942 | 2843 | 668.2 |
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 |  |