[INSTRM-561] MCS image frame occasionally shifts in x axis Created: 26/Oct/18 Updated: 13/Aug/19 Resolved: 13/Aug/19 |
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| Status: | Done |
| Project: | Instrument control development |
| Component/s: | ics_mcsActor |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Task | Priority: | Normal |
| Reporter: | yuki.moritani | Assignee: | chyan |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Description |
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While a series of 50 frames were taken in the MCS engineering run, pin-hole mask spot on MCS image occasionally looked to shift by ~50 pixels in X-axis and went back to the previous position . |
| Comments |
| Comment by cloomis [ 27/Oct/18 ] |
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The "inserted" pixels looked diagnostic. Looking for high noise in the first 100 pixels coughed up four in ~7000 frames:
The bottom corners are shown in https://sumire.pbworks.com/w/file/129779655/INSTRM-561_glitches.png |
| Comment by cloomis [ 13/Dec/18 ] |
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With good centroiding, can simply count peaks. |
| Comment by chyan [ 13/Aug/19 ] |
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This issue can be solved by add a sanity check. Simply calculating standard deviation of first 100 pixels and then compare with the standard deviation of whole image. See following link. https://github.com/Subaru-PFS/ics_mcsActor/commit/3fa3c325a35c13d4b050ca3369cff5e2dee8455f |
| Comment by chyan [ 13/Aug/19 ] |
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Waiting to be tested in the coming e-run |
