Astrometric Residual RMS Scatter Quality Grade Rater
Observed 2 Dradial residual RMS about zero (bias retained), not re-centered sample SD or reduced chi-square. Caller independently establishes frames, units, epoch, covariance and instrument context; not an identity, association or astrometric quality certification.
Description
Radial residual RMS combines paired east and north residuals.
Radial residual RMS combines paired east and north residuals.1
A caller review threshold is distinct from a universal quality grade or uncertainty model. Use Astrometric Residual RMS Scatter Quality Grade Rater to evaluate the supplied inputs under the model explained below.
When to use Astrometric Residual RMS Scatter Quality Grade Rater
Use Astrometric Residual RMS Scatter Quality Grade Rater to evaluate the supplied inputs under the model explained below. Establish the units, measurement scope and model assumptions before entering values.
How to use Astrometric Residual RMS Scatter Quality Grade Rater and understand its results
- Establish the units, measurement scope and model assumptions before entering values.
- Enter Observed residual east arcsec, Observed residual north arcsec, Caller rms review threshold arcsec using the field table and validation rules below, then run the tool.
- Read Radial residual rms arcsec, Caller rms review flag; interpret the units, signs, ordering and unknown-value placeholders described below.
- Correct reported input errors and rerun. Apply successful results according to their specific meanings and check the assumptions before using them in a decision.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedResidualEastArcsec | Observed residual east arcsec | array of number | Required; constraints below |
| observedResidualNorthArcsec | Observed residual north arcsec | array of number | Required; constraints below |
| callerRmsReviewThresholdArcsec | Caller rms review threshold arcsec | number | Required; constraints below |
Enter nonempty aligned finite east and north residuals in arcsec and a positive caller threshold. Return sqrt(mean(east²+north²)) and review only when RMS>threshold. Equality passes. No centering, fitted-parameter correction, weighting or installed letter grade occurs.
radialRms=sqrt(Σ(east²+north²)/sampleCount); review=rms>callerThreshold Use the field order, units and branch conditions described above.
| Output field | Meaning | Value type |
|---|---|---|
| radialResidualRmsArcsec | Radial residual rms arcsec | number |
| callerRmsReviewFlag | Caller rms review flag | boolean |
{
"input": {
"observedResidualEastArcsec": [
3,
0
],
"observedResidualNorthArcsec": [
4,
0
],
"callerRmsReviewThresholdArcsec": 3
},
"output": {
"radialResidualRmsArcsec": 3.5355339059327378,
"callerRmsReviewFlag": true
}
}Limitations and assumptions
A caller review threshold is distinct from a universal quality grade or uncertainty model. Apply the exact scope and assumptions explained above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are explained above; extremely large inputs or outputs can also be rejected. Input errors differ from successful false results, empty match lists and unknown-evidence placeholders.
Alternative or Complementary methods
Use Proper Motion Significance Sigma per Year Classifier for a related task: A component's significance compares signed motion with its independently measured uncertainty.
Use Excess Noise Astrometric Parameter Significance Classifier for a related task: Excess-noise significance summarizes one catalog diagnostic.
References
Similar or alternative tools
- Proper Motion Significance Sigma per Year Classifier
A component's significance compares signed motion with its independently measured uncertainty.
- Excess Noise Astrometric Parameter Significance Classifier
Excess-noise significance summarizes one catalog diagnostic.