SPACI score report for 1sa0 in ASTRAL 1.73:

PDB Entry: 1sa0
SPACI score: 0.06
AEROSPACI score: 0.06

Experiment type: XRAY
Resolution: 3.58
R-factor: 0.233
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 4
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.617
WCK2 WHAT_CHECK Ramachandran: -5.674
WCK3 WHAT_CHECK Chi angles: -5.436
WCK4 WHAT_CHECK Backbone: -10.022

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).