SPACI score report for 1sa1 in ASTRAL 1.71:

PDB Entry: 1sa1
SPACI score: 0.04
AEROSPACI score: 0.04

Experiment type: XRAY
Resolution: 4.2
R-factor: 0.206
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 4
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -3.47
WCK2 WHAT_CHECK Ramachandran: -6.632
WCK3 WHAT_CHECK Chi angles: -6.19
WCK4 WHAT_CHECK Backbone: -11.331

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).