[PIPE2D-976] Flux of medium resolution arm in simulated pfsObjects looks overestimated Created: 03/Feb/22  Updated: 17/Feb/22  Resolved: 17/Feb/22

Status: Done
Project: DRP 2-D Pipeline
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Story Priority: Normal
Reporter: Kiyoto Yabe Assignee: price
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Attachments: PNG File check_pfsObject_lr.png     PNG File check_pfsObject_mr.png    
Story Points: 2

 Description   

Looking into the problem of redshift determination of the weekly end-to-end processing at IPMU, it turns out to be that the problematic objects are in pfsObjects including the medium resolution arm. The flux (in nJy) in MR looks significantly higher than that in LR for the same object (see attached plots). The problem happened after w.2022.03 release, so I guess this is due the Jacobian related stuffs. I hope you check the issue independently and fix if this is a real problem.

 

 Comments   
Comment by price [ 11/Feb/22 ]

I've verified this, and have a fix but the work is on the branch for PIPE2D-972.

Comment by price [ 15/Feb/22 ]

Work was done on the ticket branch for PIPE2D-972. I audited the code for when the Jacobian needs to be applied, and fixed a few instances.

Comment by Kiyoto Yabe [ 16/Feb/22 ]

Thank you, price! I ran the 2D + 1D with the new fix and verified that the fix resolved the issue (or even better than before . The products are here if you are interested in: https://pfs.ipmu.jp/internal/devarch/ipmu/pipe_e2e/

Comment by price [ 17/Feb/22 ]

Fix merged as a part of PIPE2D-972.

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