[DM-27836] Correct amplifier gain values in LsstCamMapper - Jira

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Type: Bug
Status: Done
Resolution: Done
Fix Version/s: None
Component/s: obs_lsst
Labels:
- SciencePipelines

Story Points:
3
Epic Link:
Integrate WEP into DM stack
Team:
Telescope and Site
Urgent?:
No

Description

The gain values for corner wavefront sensor amplifiers are the same for intra and extra-focal parts in LsstCam (obs_lsst version

19.0.0-110-ga0aedc1+4ecf52c8e0, w2020_48 ) :

from lsst.obs.lsst import LsstCam

camera = LsstCam().getCamera()

detectorExtra = camera.get('R00_SW0')

detectorIntra = camera.get('R00_SW1')

for amp in detectorExtra :

    print(amp.getName(), amp.getGain())

for amp in detectorIntra :

    print(amp.getName(), amp.getGain())

yields

C10 1.679

C11 1.738

C12 1.584

C13 1.689

C14 1.782

C15 1.788

C16 1.596

C17 1.725

C10 1.679

C11 1.738

C12 1.584

C13 1.689

C14 1.782

C15 1.788

C16 1.596

C17 1.725

They used to be different, as in PhosimMapper:

from lsst.obs.lsst.phosim import PhosimMapper

camera  = PhosimMapper().camera

detector = camera.get('R00_S22')

for amp in detector :

    print(amp.getName(), amp.getGain())

yields

C10 1.66

C11 1.737

C12 1.804

C13 1.753

C14 1.712

C15 1.653

C16 1.619

C17 1.671

C07 1.679

C06 1.738

C05 1.584

C04 1.689

C03 1.782

C02 1.788

C01 1.596

C00 1.725

The C00:C07 in PhosimMapper are SW1, intra-focal, and C10:C17 are SW0, extra-focal. The makeGainImages.py used to make calibration files for PhoSim depends on these values to be the same between the mapper and the segmentation.txt used by PhoSim to determine amplifier gain.

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Issue Links

is child task of

DM-28556 Adapt the Latest File Format of Corner WFS

Done

is duplicated by

DM-28553 Update the gain, readNoise, and saturation levels based on EOTest

Done

Activity

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Krzysztof Suberlak created issue - 02/Dec/20 9:55 PM

Krzysztof Suberlak made changes - 02/Dec/20 9:55 PM

Field	Original Value	New Value
Link		This issue has to be done before ~~DM-26836~~ [ ~~DM-26836~~ ]

Krzysztof Suberlak made changes - 02/Dec/20 9:57 PM

Description

The gain values for corner wavefront sensor amplifiers are the same for intra and extra-focal parts:

{code:java}
from lsst.obs.lsst import LsstCam
camera = LsstCam().getCamera()
detectorExtra = camera.get('R00_SW0')
detectorIntra = camera.get('R00_SW1')
for amp in detectorExtra :
    print(amp.getName(), amp.getGain())
for amp in detectorIntra :
    print(amp.getName(), amp.getGain())
{code}
yields

{code:java}
C10 1.679
C11 1.738
C12 1.584
C13 1.689
C14 1.782
C15 1.788
C16 1.596
C17 1.725

C10 1.679
C11 1.738
C12 1.584
C13 1.689
C14 1.782
C15 1.788
C16 1.596
C17 1.725
{code}

They used to be different, as in PhosimMapper:

{code:java}
from lsst.obs.lsst.phosim import PhosimMapper
camera = PhosimMapper().camera
detector = camera.get('R00_S22')
for amp in detector :
    print(amp.getName(), amp.getGain())
{code}
yields

{code:java}
C10 1.66
C11 1.737
C12 1.804
C13 1.753
C14 1.712
C15 1.653
C16 1.619
C17 1.671

C07 1.679
C06 1.738
C05 1.584
C04 1.689
C03 1.782
C02 1.788
C01 1.596
C00 1.725
{code}
The C00:C07 in PhosimMapper are SW1, intra-focal, and C10:C17 are SW0, extra-focal. The [makeGainImages.py|https://github.com/lsst-dm/phosim_utils/blob/master/bin.src/makeGainImages.py] used to make calibration files for PhoSim depends on these values to be the same between the mapper and the [segmentation.txt|https://github.com/lsst-ts/phosim_syseng4/blob/aos/data/lsst/segmentation.txt] used by PhoSim to determine amplifier gain.

The gain values for corner wavefront sensor amplifiers are the same for intra and extra-focal parts in LsstCam (obs_lsst version

19.0.0-110-ga0aedc1+4ecf52c8e0, w2020_48 ) :

{code:java}from lsst.obs.lsst import LsstCam
camera = LsstCam().getCamera()
detectorExtra = camera.get('R00_SW0')
detectorIntra = camera.get('R00_SW1')
for amp in detectorExtra :
    print(amp.getName(), amp.getGain())
for amp in detectorIntra :
    print(amp.getName(), amp.getGain())
{code}
yields
{code:java}C10 1.679
C11 1.738
C12 1.584
C13 1.689
C14 1.782
C15 1.788
C16 1.596
C17 1.725

C10 1.679
C11 1.738
C12 1.584
C13 1.689
C14 1.782
C15 1.788
C16 1.596
C17 1.725
{code}

They used to be different, as in PhosimMapper:
{code:java}from lsst.obs.lsst.phosim import PhosimMapper
camera = PhosimMapper().camera
detector = camera.get('R00_S22')
for amp in detector :
    print(amp.getName(), amp.getGain())
{code}
yields
{code:java}C10 1.66
C11 1.737
C12 1.804
C13 1.753
C14 1.712
C15 1.653
C16 1.619
C17 1.671

C07 1.679
C06 1.738
C05 1.584
C04 1.689
C03 1.782
C02 1.788
C01 1.596
C00 1.725
{code}
The C00:C07 in PhosimMapper are SW1, intra-focal, and C10:C17 are SW0, extra-focal. The [makeGainImages.py|https://github.com/lsst-dm/phosim_utils/blob/master/bin.src/makeGainImages.py] used to make calibration files for PhoSim depends on these values to be the same between the mapper and the [segmentation.txt|https://github.com/lsst-ts/phosim_syseng4/blob/aos/data/lsst/segmentation.txt] used by PhoSim to determine amplifier gain.

Krzysztof Suberlak made changes - 29/Jan/21 11:17 PM

Status

To Do [ 10001 ]

In Progress [ 3 ]

Krzysztof Suberlak made changes - 29/Jan/21 11:18 PM

Link

This issue has to be done before ~~DM-26836~~ [ ~~DM-26836~~ ]

Krzysztof Suberlak made changes - 29/Jan/21 11:19 PM

Link

This issue is child task of ~~DM-28556~~ [ ~~DM-28556~~ ]

Krzysztof Suberlak made changes - 29/Jan/21 11:19 PM

Epic Link		~~DM-28335~~ [ 445220 ]
Team	DM Science [ 12218 ]	Telescope and Site [ 13500 ]
Urgent?	on	off

Krzysztof Suberlak made changes - 11/Mar/21 9:18 PM

Link

This issue is duplicated by ~~DM-28553~~ [ ~~DM-28553~~ ]

Krzysztof Suberlak made changes - 11/Mar/21 9:18 PM

Resolution		Done [ 10000 ]
Status	In Progress [ 3 ]	Done [ 10002 ]

Andrew Connolly made changes - 29/Sep/21 8:58 PM

Assignee

Krzysztof Suberlak [ ksuberlak ]

Andrew Connolly made changes - 29/Sep/21 8:58 PM

Story Points

People

Assignee:: Krzysztof Suberlak

Reporter:: Krzysztof Suberlak

Watchers:: Krzysztof Suberlak, Robert Lupton, Simon Krughoff

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Dates

Created:: 02/Dec/20 9:55 PM

Updated:: 29/Sep/21 8:58 PM

Resolved:: 11/Mar/21 9:18 PM

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