SPACI score report for 1stz in ASTRAL 1.71:

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

Experiment type: XRAY
Resolution: 2.2
R-factor: 0.217
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 1.245
WCK2 WHAT_CHECK Ramachandran: -0.039
WCK3 WHAT_CHECK Chi angles: -0.837
WCK4 WHAT_CHECK Backbone: -4.258

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).