SPACI score report for 1xlz in ASTRAL 1.71:

PDB Entry: 1xlz
SPACI score: 0.42
AEROSPACI score: 0.42

Experiment type: XRAY
Resolution: 2.06
R-factor: 0.21
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.725
WCK2 WHAT_CHECK Ramachandran: 1.959
WCK3 WHAT_CHECK Chi angles: -0.68
WCK4 WHAT_CHECK Backbone: -1.115

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).