Observation information
- date-obs: 2019-05-09
- time-obs: 11:54:50.323200000
- date-end: 2019-05-09
- time-end: 14:07:24.325200000
- obs_id: T03_108T01_9000002898
- exposure: 3258.77530123
- sourceid: MAXI J1820+070
- observer: JohnPaice
- ra_pnt: 275.0912
- dec_pnt: 7.185639
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T03_108T01_9000002898_19529cztM0_level2.evt
| modeM0/AS1T03_108T01_9000002898_19529cztM0_level2_quad_clean.evt
|
| Size (bytes) | 496,131,840 | 73,321,920 |
| Size | 473.1 MB
| 69.9 MB
|
| Events in quadrant A | 3,510,210 | 435,986 |
| Events in quadrant B | 3,611,236 | 438,931 |
| Events in quadrant C | 3,620,938 | 425,257 |
| Events in quadrant D | 3,799,542 | 424,200 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14814 | 2 |
| B | 0 | 15048 | 2 |
| C | 0 | 14916 | 2 |
| D | 0 | 15991 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7120 | 96 | 1.348315% |
| B | 7120 | 128 | 1.797753% |
| C | 7120 | 139 | 1.952247% |
| D | 7120 | 102 | 1.432584% |
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 | 7805 | 7121 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7805 | 7122 | 1 | 1 | 0.01% | 0.01% |  |
| C | 7805 | 7121 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7805 | 7122 | 17 | 17 | 0.22% | 0.24% |  |
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 | 16 | 10518 | 52.53 | 904 | 884 | 183.4 |
| A | 13 | 254 | 9704 | 48.09 | 904 | 884 | 183.4 |
| A | 12 | 194 | 8456 | 41.29 | 904 | 884 | 183.4 |
| B | 7 | 220 | 49822 | 284.07 | 895 | 872 | 172.3 |
| B | 0 | 244 | 28950 | 162.95 | 895 | 872 | 172.3 |
| B | 12 | 111 | 21124 | 117.53 | 895 | 872 | 172.3 |
| C | 14 | 238 | 133624 | 657.84 | 859 | 864 | 201.8 |
| C | 3 | 233 | 114177 | 561.48 | 859 | 864 | 201.8 |
| C | 7 | 247 | 12968 | 59.98 | 859 | 864 | 201.8 |
| D | 13 | 104 | 186636 | 853.4 | 882 | 858 | 217.7 |
| D | 12 | 233 | 128503 | 586.36 | 882 | 858 | 217.7 |
| D | 12 | 218 | 70928 | 321.88 | 882 | 858 | 217.7 |
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 |  |