SPACI score report for 1yst in ASTRAL 2.06:

PDB Entry: 1yst
SPACI score: 0.1
AEROSPACI score: 0.1

Experiment type: XRAY
Resolution: 3
R-factor: 0.234
PCK1 PROCHECK Ramachandran: 3
PCK2 PROCHECK Chi-1 angle: 4
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -4.29
WCK2 WHAT_CHECK Ramachandran: -7.192
WCK3 WHAT_CHECK Chi angles: -7.184
WCK4 WHAT_CHECK Backbone: -1.309

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).