lsst.analysis.tools

analysis_tools is the plotting and metric framework that is used to perform QA on the pipeline products. It is a very powerful way to explore and interact with the pipeline outputs.

Using lsst.analysis.tools

For a tutorial on working with analysis_tools please see the getting started guide.

• Getting Started Guide
• Package Layout
• A Simple Plotting Example
• Adding an Action
• Adding a Plot Type
• Plot Types
• Actions Types
• Action Types
• Plot Types

Need Help?

If you get stuck with analysis_tools then feel free to reach out to the #rubinobs-analysis-tools channel on slack and hopefully someone will help you!

Contributing

lsst.analysis.tools is developed at https://github.com/lsst/analysis_tools. You can find Jira issues for this module under the analysis_tools component.

Python API reference

lsst.analysis.tools Package

Variables

nansigmaMad(x[, axis, center, scale, nan_policy])	Compute the median absolute deviation of the data along the given axis.
sigmaMad(x[, axis, center, scale, nan_policy])	Compute the median absolute deviation of the data along the given axis.

lsst.analysis.tools.actions.plot Package

Classes

BarPanel(*args, **kw)	A configurable class describing a panel in a bar plot.
BarPlot(*args, **kw)	A plotting tool which can take multiple keyed data inputs and can create one or more bar graphs.
ColorColorFitPlot(*args, **kw)	Makes a color-color plot and overplots a prefited line to the specified area of the plot.
DiaSkyPanel(*args, **kw)	Configuration options for DiaSkyPlot panels.
DiaSkyPlot(*args, **kw)	Generic pseudo base class for plotting DiaSources (or DiaObjects) on the sky.
HistPanel(*args, **kw)	A Config class that holds parameters to configure a single panel of a histogram plot.
HistPlot(*args, **kw)	Make an N-panel plot with a configurable number of histograms displayed in each panel.
HistStatsPanel(*args, **kw)	A Config class that holds parameters to configure a the stats panel shown for histPlot.
MultiVisitCoveragePlot(*args, **kw)	Plot the coverage for a set of visits.
RhoStatisticsPlotAction(*args, **kw)	Make multiple plots of rho statistics.
ScatterPlotStatsAction(*args, **kw)	Calculates the statistics needed for the scatter plot with two hists.
ScatterPlotWithTwoHists(*args, **kw)	Makes a scatter plot of the data with a marginal histogram for each axis.
SkyPlot(*args, **kw)	Plots the on sky distribution of a parameter.
XYPlot(*args, **kw)	Make a plot (with errorbars) of one quantity (X) vs another (Y).

lsst.analysis.tools.actions.vector Package

Classes

AstromDiff(*args, **kw)	Calculate the difference between two columns, assuming their units are degrees, and convert the difference to arcseconds.
BandSelector(*args, **kw)	Makes a mask for sources observed in a specified set of bands.
BinnedCorr2Config(*args, **kw)	A Config class that holds some of the parameters supported by treecorr.
CalcE(*args, **kw)	Calculate a complex value representation of the ellipticity.
CalcE1(*args, **kw)	Calculate \(e_1\) (distortion-type) or \(g_1\) (shear-type).
CalcE2(*args, **kw)	Calculate \(e_2\) (distortion-type) or \(g_2\) (shear-type).
CalcEDiff(*args, **kw)	Calculate the difference of two ellipticities as a complex quantity.
CalcRhoStatistics(*args, **kw)	Calculate rho statistics.
CalcShapeSize(*args, **kw)	Calculate a size: \((I_{xx}I_{yy}-I_{xy}^2)^{\frac{1}{4}}\) (determinant radius) or \(\sqrt{(I_{xx}+I_{yy})/2}\) (trace radius).
CoaddPlotFlagSelector(*args, **kw)	This default setting makes it take the band from the kwargs.
ConstantValue(*args, **kw)	Return a constant scalar value.
DivideVector(*args, **kw)	Calculate (A/B)
DownselectVector(*args, **kw)	Get a vector from KeyedData, apply specified selector, return the shorter Vector.
ExtendednessSelector(*args, **kw)	A selector that picks between extended and point sources.
ExtinctionCorrectedMagDiff(*args, **kw)	Compute the difference between two magnitudes and correct for extinction By default bands are derived from the <band>_ prefix on flux columns, per the naming convention in the Object Table: e.g.
FlagSelector(*args, **kw)	The base flag selector to use to select valid sources for QA.
FractionalDifference(*args, **kw)	Calculate (A-B)/B.
GalaxySelector(*args, **kw)	A selector that picks out galaxies based off of their extendedness values.
GoodDiaSourceSelector(*args, **kw)	Selects good DIA sources from diaSourceTables.
LoadVector(*args, **kw)	Load and return a Vector from KeyedData.
MagColumnNanoJansky(*args, **kw)	Turn nano janskies into magnitudes.
MagDiff(*args, **kw)	Calculate the difference between two magnitudes; each magnitude is derived from a flux column.
MultiCriteriaDownselectVector(*args, **kw)	Get a vector from KeyedData, apply specified set of selectors with AND logic, and return the shorter Vector.
PerGroupStatistic(*args, **kw)	Compute per-group statistic values and return result as a vector with one element per group.
RangeSelector(*args, **kw)	Selects rows within a range, inclusive of min/exclusive of max.
SNCalculator(*args, **kw)	Calculate the signal-to-noise.
SkyObjectSelector(*args, **kw)	Selects sky objects in the given band(s).
SkySourceSelector(*args, **kw)	Selects sky sources from sourceTables.
Sn(*args, **kw)	Compute signal-to-noise in the given flux type.
SnSelector(*args, **kw)	Selects points that have S/N > threshold in the given flux type.
StarSelector(*args, **kw)	A selector that picks out stars based off of their extendedness values.
SubtractVector(*args, **kw)	Calculate (A-B).
ThresholdSelector(*args, **kw)	Return a mask corresponding to an applied threshold.
UnknownSelector(*args, **kw)	A selector that picks out unclassified objects based off of their extendedness values.
VectorSelector(*args, **kw)	Load a boolean vector from KeyedData and return it for use as a selector.
VisitPlotFlagSelector(*args, **kw)	Select on a set of flags appropriate for making visit-level plots (i.e., using sourceTable_visit catalogs).

lsst.analysis.tools.actions.scalar Package

Classes

ApproxFloor(*args, **kw)	Returns the median of the lowest ten values of the sorted input.
CountAction(*args, **kw)	Returns the number of non-NaN entries in the given column.
CountUniqueAction(*args, **kw)	Counts the number of unique rows in a given column.
FracInRange(*args, **kw)	Compute the fraction of a distribution that is between specified minimum and maximum values, and is not NaN.
FracNan(*args, **kw)	Compute the fraction of vector entries that are NaN.
FracThreshold(*args, **kw)	Compute the fraction of a distribution that is above or below a specified threshold.
MaxAction(*args, **kw)	Returns the maximum of the given data.
MeanAction(*args, **kw)	Calculates the mean of the given data.
MedianAction(*args, **kw)	Calculates the median of the given data.
MinAction(*args, **kw)	Returns the minimum of the given data.
SigmaMadAction(*args, **kw)	Calculates the sigma mad of the given data.
StdevAction(*args, **kw)	Calculates the standard deviation of the given data.