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  1. Data Management
  2. DM-22193

Updates DMTN-107

    Details

    • Type: Story
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: DM Subsystem Science
    • Labels:
      None

      Description

      Following the LOY1 alerts meeting, DMTN should be updated to include:

      • references to the official pre-operation data previews
      • a clear statement that we will use templates from the DPs will be used to generated LOY1 alerts.

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            lguy Leanne Guy created issue -
            lguy Leanne Guy made changes -
            Field Original Value New Value
            Epic Link DM-19305 [ 259794 ]
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            mgraham Melissa Graham added a comment -

            Two notes from the PST-SC telecon Wed Nov 20:

            • DMTN-107 currently proposes to prioritize extragalactic over galactic because direct images and direct-image photometry can be used for variable star science whereas extragalactic transients requires host subtraction --> this was misinterpreted as purposely ignoring the Galactic plane and not obtaining templates in the Galactic plane and I should've forseen that and this should be fixed/clarified in DMTN-107
            • ZI notes that although single-filter prioritization does deliver the maximum sky area and the maximum number of unique alerts, it makes it much more difficult to reject false positives (both for characterizing the system and for science purposes) so at least two filters should be used for that reason; and that generally more broadly "maximizing science" is not just maximizing alerts in year 1 but providing quality alerts in year 1 and setting up the system to provide quality alerts in year 2 (but note that DMTN-107 took the more simplistic view of maximizing unique DIAObject alerts in year 1)
            Show
            mgraham Melissa Graham added a comment - Two notes from the PST-SC telecon Wed Nov 20: DMTN-107 currently proposes to prioritize extragalactic over galactic because direct images and direct-image photometry can be used for variable star science whereas extragalactic transients requires host subtraction --> this was misinterpreted as purposely ignoring the Galactic plane and not obtaining templates in the Galactic plane and I should've forseen that and this should be fixed/clarified in DMTN-107 ZI notes that although single-filter prioritization does deliver the maximum sky area and the maximum number of unique alerts, it makes it much more difficult to reject false positives (both for characterizing the system and for science purposes) so at least two filters should be used for that reason; and that generally more broadly "maximizing science" is not just maximizing alerts in year 1 but providing quality alerts in year 1 and setting up the system to provide quality alerts in year 2 (but note that DMTN-107 took the more simplistic view of maximizing unique DIAObject alerts in year 1)
            mgraham Melissa Graham made changes -
            Link This issue is parent task of DM-22264 [ DM-22264 ]
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            mgraham Melissa Graham added a comment -

            Updates to DMTN-107 should include the recalculation of sky area surveyed during commissioning, as requested by DM-22264.

            Show
            mgraham Melissa Graham added a comment - Updates to DMTN-107 should include the recalculation of sky area surveyed during commissioning, as requested by DM-22264 .
            Hide
            mgraham Melissa Graham added a comment -

            DMTN-107 now has branch tickets/DM-22193 for incorporating changes.

            Show
            mgraham Melissa Graham added a comment - DMTN-107 now has branch tickets/ DM-22193 for incorporating changes.
            Hide
            mgraham Melissa Graham added a comment -

            Ensure also that DMTN-107 contains all needed information to properly support the new LSE about alerts in year one (by LG).

            Show
            mgraham Melissa Graham added a comment - Ensure also that DMTN-107 contains all needed information to properly support the new LSE about alerts in year one (by LG).
            mgraham Melissa Graham made changes -
            Status To Do [ 10001 ] In Progress [ 3 ]
            Hide
            mgraham Melissa Graham added a comment -

            Changes made to branch tickets/DM-22193

            Removed quoted percentages of WFD area covered by commissioning from all sections except Section 3.2.1, which discusses the current version of LSE-79. The focus of this Tech Note is on the methods of alert distribution anyway – further study of the areas should be done elsewhere. So DMTN-107 has not been "updated" with new area quotes, but rather the quotes about area have been sidelined (seems like a better long-term solution, we will not have to updated DMTN-107 again).

            This document now refrains from recommending that a "template-filler" background program should prioritize number of unique extragalactic alerts with a single-filter area-driven strategy. It now presents options and says it's an Operations team decision that needs further study and should include community input.

            One outstanding problem is that LSO-011 is cited several times but that document is not publicly available – should we be citing it?

            Show
            mgraham Melissa Graham added a comment - Changes made to branch tickets/ DM-22193 Removed quoted percentages of WFD area covered by commissioning from all sections except Section 3.2.1, which discusses the current version of LSE-79. The focus of this Tech Note is on the methods of alert distribution anyway – further study of the areas should be done elsewhere. So DMTN-107 has not been "updated" with new area quotes, but rather the quotes about area have been sidelined (seems like a better long-term solution, we will not have to updated DMTN-107 again). This document now refrains from recommending that a "template-filler" background program should prioritize number of unique extragalactic alerts with a single-filter area-driven strategy. It now presents options and says it's an Operations team decision that needs further study and should include community input. One outstanding problem is that LSO-011 is cited several times but that document is not publicly available – should we be citing it?
            mgraham Melissa Graham made changes -
            Status In Progress [ 3 ] In Review [ 10004 ]
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            mgraham Melissa Graham added a comment -

            I made a pull request for DMTN-107 and asked for Leanne Guy to review the changes to DMTN-107.

            Show
            mgraham Melissa Graham added a comment - I made a pull request for DMTN-107 and asked for Leanne Guy to review the changes to DMTN-107.
            Hide
            lguy Leanne Guy added a comment -

            Thanks Melissa Graham.  I can access https://lso-011.lsst.io without problems. I agree the document requires updating 

            Show
            lguy Leanne Guy added a comment - Thanks Melissa Graham .  I can access https://lso-011.lsst.io  without problems. I agree the document requires updating 
            mgraham Melissa Graham made changes -
            Urgent? off
            Due Date 31/Mar/20
            Hide
            lguy Leanne Guy added a comment -

            Few minor comments in PR, otherwise, good to go. Let's not hold this up for LSO-011, it should get released soon.

            Show
            lguy Leanne Guy added a comment - Few minor comments in PR, otherwise, good to go. Let's not hold this up for LSO-011, it should get released soon.
            lguy Leanne Guy made changes -
            Status In Review [ 10004 ] Reviewed [ 10101 ]
            Hide
            mgraham Melissa Graham added a comment -

            The few final things have been fixed/added, and the PR has been merged to master. All done!  

            Show
            mgraham Melissa Graham added a comment - The few final things have been fixed/added, and the PR has been merged to master. All done!  
            mgraham Melissa Graham made changes -
            Resolution Done [ 10000 ]
            Status Reviewed [ 10101 ] Done [ 10002 ]

              People

              • Assignee:
                mgraham Melissa Graham
                Reporter:
                lguy Leanne Guy
                Reviewers:
                Leanne Guy
                Watchers:
                Leanne Guy, Melissa Graham
              • Votes:
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                Watchers:
                2 Start watching this issue

                Dates

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                  Updated:
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