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    • Type: Task
    • Status: Done (View Workflow)
    • Priority: Normal
    • Resolution: Done
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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    • Sprint:
      Gen3 transition

      Description

      As reported on slack (https://sumire-pfs.slack.com/archives/C3AU3VCMU/p1673573222493039), we found a boxy (or zigzag) feature in observed spectra taken during the Nov run. This is found mainly in 600-700 nm in red arm, but rarely in blue arm. The boxy feature is found in 3 fibers of 85 FLUXSTD fibers in visit 82596. These features are not always in the same fiberIds in a different visit. They are seen both in pfsMerged and pfsArm. The normalization is smooth in these problematic wavelengths.

       

      Hamano-san found that the problematic fibers have a bright fiber next to them. The boxy features could be leaks from those bright fibers.

      There are upturns at the sides in fiberprofile, which could cause this issue. 

       

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            kiyoto.yabe Kiyoto Yabe added a comment -

            I believe now the feature is diminished or good profiles are needed for further study, but should we keep this open?

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            kiyoto.yabe Kiyoto Yabe added a comment - I believe now the feature is diminished or good profiles are needed for further study, but should we keep this open?
            Hide
            price price added a comment -

            This was addressed by creating better fiberProfiles with PIPE2D-907.

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            price price added a comment - This was addressed by creating better fiberProfiles with PIPE2D-907 .

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              • Assignee:
                price price
                Reporter:
                takuji.yamashita Takuji Yamashita
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                  Updated:
                  Resolved: