TABLE III.
Data quality indicators with SZ lossy compression for the lysozyme crystal dataset collected at the Swiss Light Source X06SA beamline with the JUNGFRAU 4M at 1.1 kHz using 12.4 keV x-rays, 100% beam transmission, and 0.088°/880 cs steps. 2045 images (180° rotation) were taken for data analysis. The low resolution shell is defined as 50–3.31 Å, while the high resolution shell is 1.18–1.11 Å. The number of reflection observations accepted per resolution shell is taken from the output of the XDS CORRECT step.
| Absolute error bound in SZ | Rmeas low/high res. shell (%) | Number of accepted observations; low/high res. shell | Mean anomalous peak height for S (σ) | Refinement statistics Rwork/Rfree (%) | Compression factor (bits/pixel) |
|---|---|---|---|---|---|
| 0.0 | 2.1/18.9 | 20 784/17 040 | 15.2 | 11.6/13.5 | 2.3 |
| 1.0 | 2.5/31.1 | 21 047/16 792 | 13.1 | 12.7/14.2 | 1.1 |
| 2.0 | 2.3/22.4 | 20 656/12 275 | 13.0 | 13.8/16.0 | 0.43 |
| 4.0 | 2.3/44.8 | 21 438/13 096 | 9.7 | 14.1/16.0 | 0.11 |
| 8.0 | 2.9/54.0 | 21 489/13 360 | 8.7 | 14.5/16.1 | 0.042 |