LargeSynopticSurveyTelescop

CharacterizationMetric

PipelinesVersion12.0

JohnSwinbank,JimBosch,andSimonKrughoff

DMTR-14

LatestRevision:2016-03-08

Abstract

Thisbriefreportdescribemeasurementsofinterestthat

v12.0oftheSciencePipeline.

ThereportforthepreviousversioncanbefoundinDMTR-11.

LARGESYNOPTICSURVEYTELESCOPE

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LARGESYNOPTICSURVEYTELESCOPE

V12.0CharacterizationRepoDMTR-14rtLatestRevision2016-03-08

Contents

1PhotometricRepeatabilityMeasurements1

2AlgorithmicPerformanceMeasurements2

3SummaryofComputationalPerformanceMeasurements2

ii

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LARGESYNOPTICSURVEYTELESCOPE

V12.0CharacterizationRepoDMTR-14rtLatestRevision2016-03-08

CharacterizationMetricReport:Science

12.0

1PhotometricRepeatabilityMeasurements

SubmittedbyJimBosch

Thisdatasetisaselectionof?-bandHyperSuprime-Camengineeringdat

Stripe82region.Thisdatasetconsistsof30sexposures,

LSSTdataindepth.Ourcurrentcalibrationapproachhas

weultimatelyplantoimplementforLSST:

•There’scurrentlynorelativecalibrationbeingrunat

•Wehaveonlylimitedcorrectionforchromaticeffects.

•There’scurrentlynoallowanceforzeropointvariations

•WealsouseamuchsimplersampleselectionthanthatproposedSRD.

AJupyternotebooktocomputethemetricscanbefoundat

https://github.com/lsst/afw/

blob/tickets/DM-3896/examples/repeatability.ipynb

Metric Characterized

Metric Ref Target

Measured

Value

Measurement

Method

Photometric

repeatability

(procCalRep)

DLP-307

≤ 13

mmag

10.6

mmag

DM-3338

(

?

band)

Photometric

repeatability (PA1gri)

DLP-315

≤ 13

mmag

10.6

mmag

DM-3338

Photometric

repeatability (PA1uzy)

DLP-316

≤ 13

mmag

10.6

mmag

DM-3338

(

?

band)

1

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LARGE SYNOPTIC SURVEY TELESCOPE

V12.0 Characterization RepoDMTR-14

rt

Latest Revision 2016-03-08

2 Algorithmic Performance Measurements

Submitted by John Swinbank

The

?

-band HSC engineering data (described above) was used

caveats apply. Consult the tickets in the Measurement Method

Metric Characterized

Metric Ref Target

Measured

Value

Measurement

Method

Residual PSF

Ellipticity

Correlations (TE1)

DLP-290

≤ 5 ×

−3

10

6 × 10

−5

DM-3040

Residual PSF

Ellipticity

Correlations (TE2)

DLP-290

≤ 5 ×

−3

10

2 × 10

−5

DM-3047

Relative

Astrometry

DLP-310

(AM1)

< 60

mas

12.49

masDM-3057

Relative

Astrometry

DLP-311

(AM2)

< 60

mas

12.19

masDM-3064

3 Summary of Computational Performance Measurements

Submitted by John Swinbank and Simon Krughoff

At this point of Construction, the computational performance

tion of precursor data processing and extrapolation from

DECam/HITS data was used for the OTT1 estimate and for the

surement of the Alert Production Computational Budget in

3rd Data Challenge

.

For the Data Release Production of the computational budget,

estimating diffim performance, HSC-I for assembling and measuring

measurement, estimates from FDR for multifit, and data from

SDQADocument-26217

[

]. Calculations for the DRP

computational

this iPython

budget

notebook

.

2

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LARGE SYNOPTIC SURVEY TELESCOPE

V12.0 Characterization RepoDMTR-14

rt

Latest Revision 2016-03-08

Metric

Characterized

Metric Ref Target

Measured

Value

Measurement

Method

OTT1

DLP-328

≤ 240

sec

200-250DM-3724

sec

AP

Computational

Budget

DLP-329

≤ 231

TFLOPS 34-39

TFLOPS

DM-3267

DRP

Computational

Budget

DLP-314

≤ 645

TFLOPS 318

TFLOPS

DM-3083

References

[1]

[DMTR-11]

, Economou, F., Swinbank, J., Bosch,

Characterization

J., Krughoff,

ric Report: Science Pipelines

,DMTR-11,URLhttps://ls.st/

Version 11.0 (Summer

DMTR-11

[2][LPM-17],Ivezić,Ž.,TheLSSTScienceCollaboration,2011,LSSTScienceRequirements

ument,LPM-17,URLhttps://ls.st/LPM-17

[3][Document-26217],Kantor,J.,2010,DataChallenge3bPerformanceTest,Document-

26217,URLhttps://ls.st/Document-26217

3