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  1. DRP 2-D Pipeline
  2. PIPE2D-1148

Flux calibration performance check using Nov run data

    Details

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

      Description

      We check the flux calibration performance using the commissioning data in November. We use three visits of a CALSPEC standard star (CALSPEC_5057499 = 82905, 82906) and a DA star (DA_288 = 83162), as well as F stars in the other raster scan data. Specifically, we calibrate the CALSPEC and DA stars from PFS using the F-stars in the same field of view and compare their spectra with those from the CALSPEC archive.

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          relates to

          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. PIPE2D-1165 Engineering Data Release 1

          • Normal - Normal priorities
          • Done

          Task - A task that needs to be done. PIPE2D-1184 Absolute flux calibration using engineering data

          • Minor - Minor loss of function, or other problem where easy workaround is present.
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            5 older comments
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            takuji.yamashita Takuji Yamashita added a comment -

            I updated the plot of flux comparisons. This is an edr-20230331 version which Yabe-san has processed. The results are not significantly different from the previous one.

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            takuji.yamashita Takuji Yamashita added a comment - I updated the plot of flux comparisons. This is an edr-20230331 version which Yabe-san has processed. The results are not significantly different from the previous one.
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            wtgee Wilfred Gee added a comment -

            I don't think this is terribly important, but Takuji Yamashita I wanted to recreate some of the plots above because it seemed like your `pfsMerged.flux / pfsMerged.norm` subplot (2 of 5 here) was off for the DA WD, I'm guessing because of the different calibration set?

            I've attached my (mostly) similar plot that shows more sensible values for that subplot. (I did slightly different values for the linear fit just for fun)

             

             

            Show
            wtgee Wilfred Gee added a comment - I don't think this is terribly important, but Takuji Yamashita  I wanted to recreate some of the plots above because it seemed like your `pfsMerged.flux / pfsMerged.norm` subplot (2 of 5 here) was off for the DA WD, I'm guessing because of the different calibration set? I've attached my (mostly) similar plot that shows more sensible values for that subplot. (I did slightly different values for the linear fit just for fun)    
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            takuji.yamashita Takuji Yamashita added a comment -

            Your pfsMereged.flux/pfsMereged.norm spectrum looks very different from the pfsSingle of the DA WD, especially for noise levels. And we can find a strong absorption line at H-alpha and two absorptions at 590 nm (probably they are NaD/HeII). So, I guess your subplot may be from another star than the DA WD, for example, a FLUXSTD?

            Show
            takuji.yamashita Takuji Yamashita added a comment - Your pfsMereged.flux/pfsMereged.norm spectrum looks very different from the pfsSingle of the DA WD, especially for noise levels. And we can find a strong absorption line at H-alpha and two absorptions at 590 nm (probably they are NaD/HeII). So, I guess your subplot may be from another star than the DA WD, for example, a FLUXSTD?
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            wtgee Wilfred Gee added a comment -

            Looks like my fiberId and fiberIndex might have been swapped due to me not being careful with the notebook. I'll double-check things again. Thanks for the response!

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            wtgee Wilfred Gee added a comment - Looks like my fiberId and fiberIndex might have been swapped due to me not being careful with the notebook. I'll double-check things again. Thanks for the response!
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            takuji.yamashita Takuji Yamashita added a comment -

            I have checked the flux-calibrated spectra of the CALSPEC and DA WD stars. We close this ticket.

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            takuji.yamashita Takuji Yamashita added a comment - I have checked the flux-calibrated spectra of the CALSPEC and DA WD stars. We close this ticket.

              People

              • Assignee:
                takuji.yamashita Takuji Yamashita
                Reporter:
                takuji.yamashita Takuji Yamashita
                Reviewers:
                Kiyoto Yabe
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                Dates

                • Created:
                  Updated:
                  Resolved: