SPACI score report for 1ywa in ASTRAL 2.08:

PDB Entry: 1ywa
SPACI score: 1.15
AEROSPACI score: 1.15

Experiment type: XRAY
Resolution: 0.89
R-factor: 0.121
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.074
WCK2 WHAT_CHECK Ramachandran: -0.231
WCK3 WHAT_CHECK Chi angles: -0.133
WCK4 WHAT_CHECK Backbone: 0.997

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).