SPACI score report for 1xg8 in ASTRAL 2.02:

PDB Entry: 1xg8
SPACI score: 0.38
AEROSPACI score: 0.38

Experiment type: XRAY
Resolution: 2.1
R-factor: 0.229
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.013
WCK2 WHAT_CHECK Ramachandran: -2.386
WCK3 WHAT_CHECK Chi angles: -1.79
WCK4 WHAT_CHECK Backbone: -0.105

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).