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The dst_vertex.iflag definitions

As of 10Feb00...

NOTE: For the triggered event you do not have to change anything
(iflag=1 and vertex_id=kEventVertexId)
**iflag = **

- For primary vertex this indicates the fitting
iteration and error reporting as follows (see
documentation for module evr_am.F):
- +yx1 for normal, successfully found primary vertex
during the 3rd iteration
- -yx3 for initial seed value
- -yx2 for first iteration value
- -yx1 for second iteration value
- -yx4 for failed fit with Determinant of G =0.0,
occuring during any iteration.
- -yx5 for failed error covariance matrix evaluation
during fit with Determinant of E = 0.0,
occuring during any iteration.

definitions:
- x is the event vertex id (for pileups). Zero
means the triggered event vertex, x=1 is the next one etc
- y is the det_id for prevertex finding only

y=0 is not prevertex, y=1 TPC prevertex,
y=2 SVT, y=3 FTPC etc. det_id compliments this info

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Contact Person: Spiros Margetis