debug io target keyword preceision

csst_cpic_sim/io.py

@@ -300,7 +300,7 @@ def primary_hdu(
 
     radec = SkyCoord(cstar['ra'], cstar['dec'])
     ra_str = radec.ra.to_string(unit=u.hour, sep='', precision=1, pad=True)
-    dec_str = radec.dec.to_string(unit=u.deg, sep='', alwayssign=True, pad=True)
+    dec_str = radec.dec.to_string(unit=u.deg, sep='', precision=0, alwayssign=True, pad=True)
     target_name = ra_str + dec_str
 
     header['OBJECT'] = cstar.get('name', target_name)