[PIPE2D-866] Normalization in 2d subtraction, SuNNS subtraction in PIPE2D-857 Created: 29/Jun/21  Updated: 10/Jul/21  Resolved: 10/Jul/21

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

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

Attachments: PNG File Screen Shot 2021-06-28 at 4.51.56 PM.png     JPEG File subtraction.jpg    
Story Points: 2
Sprint: 2DDRP-2021 A 6
Reviewers: hassan

 Description   

I am looking at the images of 2d sky subtraction, from PIPE2D-857. The normalization of the 2d sky subtracted points in SuNNS seems to be off by approximately 20%. The rerun is placed at /projects/HSC/PFS/Subaru/rerun/ncaplar/PIPE2D-857_SuNSS . As Paul mentioned during the Monday meeting (Jun 28), there is a possibility that this is a simple bug due to recent refactoring of normalization and psf flux measurements.

 Comments   
Comment by price [ 29/Jun/21 ]

Could you please provide the command-line you used?

Comment by ncaplar [ 29/Jun/21 ]

Yes, I apologize. I believe it was 

reduceExposure.py /projects/HSC/PFS/Subaru --calib /projects/HSC/PFS/Subaru/CALIB-ncaplar --rerun /projects/HSC/PFS/Subaru/rerun/ncaplar/PIPE2D-857_SuNSS/ --id visit=46582..46588 arm=r -c doMeasurePsf=True doSubtractSky2d=True doWriteCalexp=True subtractSky2d.useAllFibers=True

Comment by price [ 03/Jul/21 ]

This is in much better shape now. The main problem was that the line photometry was being done with the temporary PSF while the subtraction was being done with the proper PSF.

Comment by hassan [ 10/Jul/21 ]

Changes are fine. Left a comment about swallowing exceptions. Just provide a justification or update.

Comment by price [ 10/Jul/21 ]

Adjusted to catch LSST exceptions only (so we don't catch, e.g., memory allocation failures).

Merged.

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