Observation information
- date-obs: 2018-03-30
- time-obs: 16:08:16.156700000
- date-end: 2018-03-30
- time-end: 18:24:52.156000000
- obs_id: T02_038T01_9000001994
- exposure: 3563.12132965
- sourceid: MAXI J1820+070
- observer: pgandhi
- ra_pnt: 275.1292
- dec_pnt: 7.184722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T02_038T01_9000001994_13537cztM0_level2.evt
| modeM0/AS1T02_038T01_9000001994_13537cztM0_level2_quad_clean.evt
|
| Size (bytes) | 615,355,200 | 108,164,160 |
| Size | 586.8 MB
| 103.2 MB
|
| Events in quadrant A | 3,986,709 | 704,773 |
| Events in quadrant B | 4,727,067 | 700,019 |
| Events in quadrant C | 4,276,609 | 698,153 |
| Events in quadrant D | 5,143,869 | 657,640 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16030 | 3 |
| B | 0 | 18438 | 2 |
| C | 0 | 17102 | 2 |
| D | 0 | 19864 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 8 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7404 | 130 | 1.755808% |
| B | 7404 | 308 | 4.159914% |
| C | 7404 | 117 | 1.580227% |
| D | 7404 | 683 | 9.224743% |
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 | 7725 | 7405 | 16 | 16 | 0.21% | 0.22% |  |
| B | 7725 | 7405 | 128 | 128 | 1.66% | 1.73% |  |
| C | 7725 | 7405 | 1 | 1 | 0.01% | 0.01% |  |
| D | 7724 | 7404 | 392 | 392 | 5.08% | 5.29% |  |
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 | 4 | 2 | 42025 | 190.9 | 1005 | 987 | 215.0 |
| A | 1 | 162 | 32986 | 148.85 | 1005 | 987 | 215.0 |
| A | 14 | 238 | 17066 | 74.8 | 1005 | 987 | 215.0 |
| B | 3 | 64 | 714686 | 3614.63 | 995 | 974 | 197.5 |
| B | 0 | 189 | 35536 | 175.04 | 995 | 974 | 197.5 |
| B | 0 | 214 | 30463 | 149.35 | 995 | 974 | 197.5 |
| C | 3 | 233 | 479209 | 2063.76 | 973 | 982 | 231.7 |
| C | 13 | 61 | 6926 | 25.65 | 973 | 982 | 231.7 |
| C | 8 | 128 | 4329 | 14.44 | 973 | 982 | 231.7 |
| D | 13 | 122 | 1291990 | 5613.39 | 930 | 906 | 230.0 |
| D | 13 | 104 | 95221 | 410.06 | 930 | 906 | 230.0 |
| D | 8 | 195 | 59075 | 252.91 | 930 | 906 | 230.0 |
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 |  |