Logistics

Date , 10:00 PT

BlueJeans (note the new number): https://bluejeans.com/583102117

Attendees

Regrets

Weekly meeting of the DM-SST to discuss scientific aspects of the Data Management System

Discussion items


ItemWhoNotesConclusions and action items
Data Rights

Zeljko Ivezic

  • Contributions from international partners hasn't been as much as was hoped for.
  • Going to the agencies starting in February to see if they would support opening up data rights and covering the whole operations budget. Would give the US greater control of operations; wouldn't need to ask the partners.

Snaps

Zeljko Ivezic

PST is considering the implications of going to single-snap visits, would like DM to evaluate the impact on processing (e.g. cosmic ray removal)

  • Gregory et al.: We already support single-snaps.
  • Jim: Higher risk that two-snap processing will difficult than single-snap processing will be difficult. 
  • Strong chorus from SST saying we already evaluated single-snaps at the time of LCR-687
  • Leanne Guy feed this back to PST by or at next PST F2F meeting.  
Updates from DM CCB

John Swinbank

Proposal from DMCCB that at each SST meeting we review open RFC to decide whether they require CCB approval (flagged)

  • Eric: Uncomfortable with having semi-unannounced-change-controlled items. Would be better to be clear about what was or wasn't controlled.
  • This sentiment was shared by some of the DMCCB, but others strongly wanted further control over RFC process.


  • Looks like this will be happening regardless of SST's uncomfortableness.
Information item: ellipticity residual requirements

Gregory Dubois-Felsmann / Jim Bosch

See LCR-1554, "Remove Duplicate Requirement in OSS"

  • Gregory Dubois-Felsmann prepare to fix the basic flow down problem on ~week timescale, so LCR can proceed  
  • Michael Wood-Vasey consult with DESC WL experts to understand if they have a better set of metrics that could be used in these requirements. Timescale ~month after DESC meeting  

DM-18499 - Getting issue details... STATUS

Treatment of cosmic rays

Simon Krughoff

DESC/DES are very concerned that we are interpolating CRs (even though we mask them). Do we interpolate over them? Suggestion is that we put together a short TN to describe our postion,

DESC is trying to ensure that the DC2 simulations and subsequent DM processing are doing the right thing. Are the CRs being detected properly? Are bleed trails being detected properly?

  • Robert Lupton hold a technically-focused telecon with the relevant people in DESC, along with a short writeup  
DM-19382 - Getting issue details... STATUS
Focal Plane Orientation

Simon Krughoff

DM focal plane orientation differs from that of the camera engineering diagrams and it causes no end of confusion. Aaron Roodman is OK with all LSST images being in "DM" orientation with bleed columns vertical but (years ago) they did not want to change all their engineering drawings. Corner raft orientation in obs_lsst should be checked.

  • Electronic orientation was agreed with the Camera team long ago.
  • Question of how DM represents LSST corner raft detectors, some of which are rotated from the readout orientation of the rest of the camera.
  • HSC always reorients detectors to electronic-orientation, even edge/corner detectors that are physically 90º rotated from the other chips.
  • Create a ticket to investigate a possibleissue in the how the phosim-repackager rearranges the data Simon Krughoff  
Alerts Key NumbersMelissa Graham

Melissa has a proposed final drafts for the RFC and DMTN-102 for the alerts key numbers document:

https://confluence.lsstcorp.org/pages/viewpage.action?pageId=94765182

  • Deferred to next week.
Overdue or undated DM Science Team tickets

Leanne Guy

See list below - still 34 unreviewed and undated tickets
Open actions

Leanne Guy



AOB



List of SST tasks (Confluence)

DescriptionDue dateAssigneeTask appears on
  • Leanne Guy to talk to Science Pipelines (Yusra) about when do this transfer  
19 Oct 2021Leanne Guy2021-09-28 Science Metric Development Agenda and Meeting notes
  • Leanne Guy arrange to disucss at a future meeting if there are metrics from PDR3 & this paper that we might want to include in faro.   
26 Oct 2021Leanne Guy2021-08-31 Science Metric Development Agenda and Meeting notes
  • Colin to ask about capturing ideas for improvement to the stellar locus algorithm   
30 Nov 2021 2021-11-09 Science Metric Development Agenda and Meeting notes
  • Robert Lupton Clarify the meaning of time in the object table. 1 sentence description in sdm_schemas, can link to a short DMTN.  Update 2022-02-09: Meeting to resolve this on 2022-02-21  
28 Feb 2022Robert Lupton2018-11-05 DM SST F2F Agenda and Meeting notes
  • Gregory Dubois-Felsmann check if SDM standardization is adequately represented in project documents, and whether DMTN-067 should be required.
31 Mar 2022Gregory Dubois-Felsmann2022-02-14 DM-SST Virtual F2F Agenda and Meeting notes
28 Feb 2023Leanne Guy2023-01-23 DM-SST Agenda and Meeting Notes
  • Leanne Guy talk to Steve R about presenting plans for the ShearObject table to PST and SciCollab chairs   
20 Mar 2023Leanne Guy2023-02-27 DM-SST Agenda and Meeting Notes
31 Mar 2023Jim Bosch2023-02-27 DM-SST Agenda and Meeting Notes
  • Leanne Guy  talk to Gregory Dubois-Felsmann to review the original intent of the AFS-related Portal requirements before deciding on a course of action  
29 May 2023Leanne Guy2023-05-01 DM-SST Focus Meeting - Brokers in Commissioning
  • Leanne Guy Prepare to consult the PST on the question of providing compressed PVIs for AP outputs, to cover the period before the data become available in a DR.  
02 Jun 2023Leanne Guy2023-03-27 DM-SST Agenda and Meeting Notes
  • Jim Bosch Incorporate 30-60 day period for raws on disk into the strawman proposal and present to KT  
26 Jun 2023Jim Bosch2023-05-08 DM-SST Agenda and Meeting Notes
  • Parker Fagrelius Patrick Ingraham  how long will it take to do a scan as described? No need to scan the whole WL range but will require additional points outside nominal lambda range.  
30 Jun 2023Parker Fagrelius2023-03-27 DM-SST Agenda and Meeting Notes
31 Jul 2023Colin Slater2023-07-10 DM-SST Agenda and Meeting Notes
  • Eli Rykoff , Leanne Guy  Develop a proposal for what calibration processing, hardware, data we actually need and what will be needed for DR1. This has implications for the ORR and for prioritisation of work in commissioning  
31 Jul 2023Eli Rykoff2023-01-30 DM-SST Agenda and Meeting Notes
  • Yusra AlSayyad will look to see if there is any effort to help on option 1  
28 Aug 2023Yusra AlSayyad2023-08-14 DM-SST Agenda and Meeting Notes
  • Jim Bosch  Provide a physical example of that a  up on cell table would look like fo the Colin Slater / DAX team to review  
31 Aug 2023Jim Bosch2023-02-27 DM-SST Agenda and Meeting Notes
30 Nov 2023Leanne Guy2023-10-23 DM-SST vF2F Agenda and Meeting Notes
  •  "What is the pathway to defining the data products that are required to meet DMS-REQ-0266" Jeffrey Carlin   
30 Nov 2023Jeffrey Carlin2023-10-23 DM-SST vF2F Agenda and Meeting Notes
30 Nov 2023Gregory Dubois-Felsmann2023-10-23 DM-SST vF2F Agenda and Meeting Notes
  • Jeffrey Carlin follow up with KT on DMS-REQ-0176 and DMS-REQ-0315 to update/disaggregate this for latest base/summit infrastructure split.  
30 Nov 2023Jeffrey Carlin2023-10-23 DM-SST vF2F Agenda and Meeting Notes


Overdue or Undated DM Science Team tickets

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LIT tickets of interest to DM Science

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