Observation information
- date-obs: 2018-03-30
- time-obs: 22:53:31.150500000
- date-end: 2018-03-31
- time-end: 03:20:46.139500000
- obs_id: T02_038T01_9000001994
- exposure: 8832.29653626
- 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_13543cztM0_level2.evt
| modeM0/AS1T02_038T01_9000001994_13543cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,092,651,840 | 253,229,760 |
| Size | 1.0 GB
| 241.5 MB
|
| Events in quadrant A | 7,228,262 | 1,731,010 |
| Events in quadrant B | 7,669,136 | 1,723,265 |
| Events in quadrant C | 7,682,586 | 1,713,025 |
| Events in quadrant D | 9,575,590 | 1,546,586 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 29433 | 4 |
| B | 0 | 30976 | 3 |
| C | 0 | 30940 | 3 |
| D | 0 | 37242 | 3 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 280 | 0 |
| B | 0 | 280 | 0 |
| C | 0 | 280 | 0 |
| D | 0 | 280 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23 | 0 |
| B | 0 | 23 | 0 |
| C | 0 | 23 | 0 |
| D | 0 | 23 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 13865 | 124 | 0.894338% |
| B | 13865 | 219 | 1.579517% |
| C | 13865 | 96 | 0.692391% |
| D | 13865 | 698 | 5.034259% |
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 | 16036 | 13868 | 10 | 10 | 0.06% | 0.07% |  |
| B | 16036 | 13868 | 48 | 48 | 0.30% | 0.35% |  |
| C | 16036 | 13867 | 3 | 3 | 0.02% | 0.02% |  |
| D | 16036 | 13869 | 610 | 610 | 3.80% | 4.40% |  |
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 | 15 | 69 | 69268 | 164.23 | 1851 | 1814 | 410.7 |
| A | 1 | 162 | 24441 | 55.09 | 1851 | 1814 | 410.7 |
| A | 4 | 2 | 16959 | 36.87 | 1851 | 1814 | 410.7 |
| B | 0 | 85 | 199934 | 533.24 | 1845 | 1808 | 371.5 |
| B | 3 | 64 | 158459 | 421.62 | 1845 | 1808 | 371.5 |
| B | 4 | 142 | 51283 | 133.16 | 1845 | 1808 | 371.5 |
| C | 3 | 233 | 645780 | 1484.36 | 1796 | 1820 | 433.8 |
| C | 7 | 238 | 35529 | 77.7 | 1796 | 1820 | 433.8 |
| C | 13 | 61 | 12835 | 25.39 | 1796 | 1820 | 433.8 |
| D | 5 | 222 | 1008376 | 2291.24 | 1738 | 1692 | 439.4 |
| D | 13 | 122 | 979075 | 2224.55 | 1738 | 1692 | 439.4 |
| D | 2 | 136 | 358922 | 813.06 | 1738 | 1692 | 439.4 |
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 |  |