SPACI score report for 1xs0 in ASTRAL 2.08:

PDB Entry: 1xs0
SPACI score: 0.51
AEROSPACI score: 0.51

Experiment type: XRAY
Resolution: 1.58
R-factor: 0.225
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -1.959
WCK2 WHAT_CHECK Ramachandran: -1.951
WCK3 WHAT_CHECK Chi angles: -2.515
WCK4 WHAT_CHECK Backbone: 2.521

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).