Observation information
- date-obs: 2017-07-30
- time-obs: 05:55:19.260000000
- date-end: 2017-07-30
- time-end: 08:15:19.029000000
- obs_id: A03_107T01_9000001418
- exposure: 3997.25697535
- sourceid: 4U 1820-30
- observer: graman
- ra_pnt: 275.9188
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A03_107T01_9000001418_09934cztM0_level2.evt
| modeM0/AS1A03_107T01_9000001418_09934cztM0_level2_quad_clean.evt
|
| Size (bytes) | 616,348,800 | 82,811,520 |
| Size | 587.8 MB
| 79.0 MB
|
| Events in quadrant A | 6,176,959 | 465,189 |
| Events in quadrant B | 3,906,146 | 509,633 |
| Events in quadrant C | 3,645,440 | 509,072 |
| Events in quadrant D | 4,406,661 | 479,013 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 24343 | 592 |
| B | 0 | 17193 | 319 |
| C | 0 | 16806 | 294 |
| D | 0 | 18874 | 406 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 164 | 4 |
| B | 0 | 164 | 4 |
| C | 0 | 164 | 6 |
| D | 0 | 164 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7807 | 863 | 11.054182% |
| B | 7835 | 256 | 3.267390% |
| C | 7843 | 162 | 2.065536% |
| D | 7817 | 207 | 2.648075% |
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 | 8393 | 7940 | 595 | 595 | 7.09% | 7.49% |  |
| B | 8400 | 7966 | 14 | 14 | 0.17% | 0.18% |  |
| C | 8399 | 7968 | 0 | 0 | 0.00% | 0.00% |  |
| D | 8400 | 7957 | 18 | 18 | 0.21% | 0.23% |  |
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 | 239 | 2650289 | 14159.95 | 909 | 888 | 187.1 |
| A | 15 | 174 | 12959 | 64.51 | 909 | 888 | 187.1 |
| A | 0 | 226 | 8132 | 38.72 | 909 | 888 | 187.1 |
| B | 4 | 81 | 45360 | 238.06 | 955 | 930 | 186.6 |
| B | 0 | 214 | 38898 | 203.44 | 955 | 930 | 186.6 |
| B | 0 | 219 | 28068 | 145.41 | 955 | 930 | 186.6 |
| C | 13 | 61 | 6955 | 27.31 | 931 | 936 | 220.4 |
| C | 12 | 4 | 5736 | 21.78 | 931 | 936 | 220.4 |
| C | 8 | 128 | 4862 | 17.81 | 931 | 936 | 220.4 |
| D | 2 | 16 | 243449 | 1041.65 | 915 | 889 | 232.9 |
| D | 8 | 195 | 189221 | 808.77 | 915 | 889 | 232.9 |
| D | 1 | 52 | 184453 | 788.29 | 915 | 889 | 232.9 |
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 |  |