SPACI score report for 1hz4 in ASTRAL 2.08:

PDB Entry: 1hz4
SPACI score: 0.68
AEROSPACI score: 0.68

Experiment type: XRAY
Resolution: 1.45
R-factor: 0.189
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.505
WCK2 WHAT_CHECK Ramachandran: 2.085
WCK3 WHAT_CHECK Chi angles: 1.103
WCK4 WHAT_CHECK Backbone: 1.279

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).