SPACI score report for 1xxh in ASTRAL 2.06:

PDB Entry: 1xxh
SPACI score: 0.06
AEROSPACI score: 0.06

Experiment type: XRAY
Resolution: 3.45
R-factor: 0.315
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.564
WCK2 WHAT_CHECK Ramachandran: -5.958
WCK3 WHAT_CHECK Chi angles: -3.844
WCK4 WHAT_CHECK Backbone: -0.445

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).