Details
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Type:
Story
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Status: Done
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Resolution: Done
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Fix Version/s: None
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Component/s: Design Documents, Requirements Documents
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Team:DM Science
Description
Section 3.3 says:
The described alert processing design relies on the “living” Level 1 database that contains the objects and sources detected on difference images. [...] As these get updated and added to, their updated contents becomes visible (query-able) immediately.
This is inaccurate, as the database baseline requires users to access a replicated version of the PPDB, and the timescale for that replication is not yet decided. DMS-REQ-0004 requires that the nightly products be accessible in less than L1PublicT, which is currently 24 hours.
I think it is generally expected we can replicate the database much faster than once per day, but I don't believe there's a solid number we can provide.
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I've changed the tex to "within 24 hours" to match the DMSR for now, so we can include this in current batch of DPDD updates. I'll file a follow-on ticket in a minute to study if we can shorten that time lag.
Colin Slater
added a comment - I've changed the tex to "within 24 hours" to match the DMSR for now, so we can include this in current batch of DPDD updates. I'll file a follow-on ticket in a minute to study if we can shorten that time lag. Approved
Merged. Follow-on ticket is DM-15619.
Colin Slater
added a comment - Merged. Follow-on ticket is DM-15619 . Created LCR-1459 https://project.lsst.org/groups/ccb/node/2655
I've summarized all references to L1PublicT in the Observatory and DM requirements on this Confluence page: https://confluence.lsstcorp.org/display/~gpdf/Requirements+referencing+L1PublicT .