Shear PSF Field Parameters¶
Metadata¶
Data product name |
DpdShePsfFieldParameters |
Data product custodian |
SHE |
Name of the Schema file |
|
Processing Element(s) creating/using the data product |
Creators:
Consumers:
|
Processing function using the data product |
SHE |
Proposed for inclusion in EAS/SAS |
This product is proposed for inclusion in the SAS: no |
Detailed description of the data product¶
PSF field parameters product, giving the telescope state for a given exposure. Parameterisation for this data model largely consists of a subset of those included in the she_psfcalibration data product, as it is limited to only those parameters which are expected to vary on an exposure-to-exposure time scale (or on a time scale less than calibration observation cadence). Finalised Format TBD.
Name of file:
EUC_SHE_PSF-FIELDPARAMS_[OBSERVATION_ID]_[YYYYMMDDThhmmss.s]Z_[VERSION].fits
where OBSERVATION_ID is the observation ID for this field, YYYYMMDDThhmmss.s is the time the product was created in UTC, and VERSION is the version number of the SHE pipeline used to create the data product.
The FITS output file will contain the following information:
Output File¶
The FITS output file will contain the following information:
HDU List
Primary Header¶
The primary head will contain the following additional information:
HDU PRIMARY: header |
|||
|---|---|---|---|
Name |
Description |
Value |
|
Keywords |
FITS_VER |
string = 9.0 |
|
FITS_DEF |
string = she.psfFieldParameters |
||
DATE-FIT |
string |
||
EXP_PID |
string |
||
OBS_ID |
integer |
||
PNT_ID |
integer |
||
DATE_OBS |
string |
||
Telescope Mode Parameters¶
These are parameters that describe mirror movements, based on a ray tracing model.
HDU SheTelescopeModeParams: header |
|||
|---|---|---|---|
Name |
Description |
Value |
|
Keywords |
FITS_VER |
string = 9.0 |
|
FITS_DEF |
string = she.psfFieldParameters.SheTelescopeModeParams |
||
HDU SheTelescopeModeParams: 19 columns table |
||||
|---|---|---|---|---|
Name |
Description |
Unit |
Format |
|
Columns |
SHE_PSF_FIELD_M1TRAD |
NA |
FITS E |
|
SHE_PSF_FIELD_M2TRAD |
NA |
FITS E |
||
SHE_PSF_FIELD_FOM1TRFN |
NA |
FITS E |
||
SHE_PSF_FIELD_FOM2TRFN |
NA |
FITS E |
||
SHE_PSF_FIELD_M3TRAD |
NA |
FITS E |
||
SHE_PSF_FIELD_DIC_TRFN |
NA |
FITS E |
||
SHE_PSF_FIELD_M1TCON |
NA |
FITS E |
||
SHE_PSF_FIELD_M2TCON |
NA |
FITS E |
||
SHE_PSF_FIELD_M3TCON |
NA |
FITS E |
||
SHE_PSF_FIELD_M2TZ |
NA |
FITS E |
||
SHE_PSF_FIELD_M2TX |
NA |
FITS E |
||
SHE_PSF_FIELD_M2TY |
NA |
FITS E |
||
SHE_PSF_FIELD_M2RX |
NA |
FITS E |
||
SHE_PSF_FIELD_M2RY |
NA |
FITS E |
||
SHE_PSF_FIELD_M3TZ |
NA |
FITS E |
||
SHE_PSF_FIELD_M3TX |
NA |
FITS E |
||
SHE_PSF_FIELD_M3TY |
NA |
FITS E |
||
SHE_PSF_FIELD_M3RX |
NA |
FITS E |
||
SHE_PSF_FIELD_M3RY |
NA |
FITS E |
||
Zernike Basis Coefficients¶
These coefficients are the weights for the she.psfLevel2CalibrationParameters.SheBasisZernikeModeParams to find the best fit Zernike parameters from the array of Zernike modes at different roll angle and solar-aspect angle using the roll angle and solar-aspect angle of the field observation.
HDU SheZernikeBasisCoeffs: header |
|||
|---|---|---|---|
Name |
Description |
Value |
|
Keywords |
FITS_VER |
string = 9.0 |
|
FITS_DEF |
string = she.psfFieldParameters.SheZernikeBasisCoeffs |
||
NLEVEL1 |
integer |
||
HDU SheZernikeBasisCoeffs: 2 columns table |
||||
|---|---|---|---|---|
Name |
Description |
Unit |
Format |
|
Columns |
LEVEL1_BASIS_INDEX |
NA |
FITS PE(20) |
|
BASIS_ZERN_AMP_COEFF |
NA |
FITS PE(20) |
||
Zernike Mode Parameters¶
The Zernike mode parameters describe the wavefront errors as a set of orthoganol functions that change in radial and azimuthal degree. For field fitting, many parameters are derived from the solar-aspect and roll angle using the Level 2 calibration product, but others that are strongly linked to focus are fitted for. The coefficients are a combination of the modes that are related to different optical effects and polynomial functions that describe the variation across the field-of-view.
HDU SheZernikeModeParams: header |
|||
|---|---|---|---|
Name |
Description |
Value |
|
Keywords |
FITS_VER |
string = 9.0 |
|
FITS_DEF |
string = she.psfFieldParameters.SheZernikeModeParams |
||
NZERNMDE |
integer |
||
NPLOYCFF |
integer |
||
HDU SheZernikeModeParams: 1 columns table |
||||
|---|---|---|---|---|
Name |
Description |
Unit |
Format |
|
Columns |
ZERNIKE_POLY_AMP_WFE |
NA |
FITS PE(500) |
|
Fisher Matrix Parameters¶
The Fisher matrix parameters calculated from the maximum likelihood fit of the model to the stars in these field.
HDU ShePsfFieldFisherMatrix: header |
|||
|---|---|---|---|
Name |
Description |
Value |
|
Keywords |
FITS_VER |
string = 9.0 |
|
FITS_DEF |
string = she.she.psfFieldParameters.SheDetectorModelParams |
||
HDU ShePsfFieldFisherMatrix: 1 columns table |
||||
|---|---|---|---|---|
Name |
Description |
Unit |
Format |
|
Columns |
FISHER_MATRIX_ZNK_WFE |
NA |
FITS PE(2500) |
|
Star Residual Parameters¶
Details of the fit for each star used: how well the PSF models each individual star.
HDU ShePsfFieldStarResiduals: header |
|||
|---|---|---|---|
Name |
Description |
Value |
|
Keywords |
FITS_VER |
string = 9.0 |
|
FITS_DEF |
string = she.she.psfFieldParameters.SheFieldStarResiduals |
||
HDU ShePsfFieldStarResiduals: 15 columns table |
||||
|---|---|---|---|---|
Name |
Description |
Unit |
Format |
|
Columns |
OBJECT_ID |
NA |
FITS K |
|
EXPOSURE_PRODUCT_ID |
NA |
FITS K |
||
DET_IDX |
NA |
FITS I |
||
X_POS |
pixel |
FITS E |
||
Y_POS |
pixel |
FITS E |
||
FOV_X |
deg |
FITS D |
||
FOV_Y |
deg |
FITS D |
||
STAR_WEIGHT |
NA |
FITS E |
||
REGION_SIZE |
pixel |
FITS I |
||
RESIDUAL_RMS |
NA |
FITS E |
||
STAR_PSF_CHISQ |
NA |
FITS E |
||
STAR_NDOF |
NA |
FITS I |
||
MOMENTS_OF_FIT |
NA |
FITS PE(2) |
||
MOMENTS_OF_DATA |
NA |
FITS PE(2) |
||
MOMENTS_OF_RESIDUALS |
NA |
FITS PE(2) |
||
Toolkit Input Parameters¶
The parameters used in the configuration of the SHE_PSF_Toolkit software.
HDU SheToolkitInputParams: header |
|||
|---|---|---|---|
Name |
Description |
Value |
|
Keywords |
FITS_VER |
string = 9.0 |
|
FITS_DEF |
string = she.she.psfFieldParameters.SheToolkitInputParams |
||
HDU SheToolkitInputParams: 2 columns table |
||||
|---|---|---|---|---|
Name |
Description |
Unit |
Format |
|
Columns |
TOOLKIT_PARAM_NAME |
NA |
FITS 40A |
|
TOOLKIT_VALUE |
NA |
FITS 60A |
||
Diagnostic Parameters¶
The chi-squared and number of degrees of freedom of the fit.
HDU ShePsfDiagnostics: header |
|||
|---|---|---|---|
Name |
Description |
Value |
|
Keywords |
FITS_VER |
string = 9.0 |
|
FITS_DEF |
string = she.psfFieldParameters.ShePsfDiagnostics |
||
HDU ShePsfDiagnostics: 2 columns table |
||||
|---|---|---|---|---|
Name |
Description |
Unit |
Format |
|
Columns |
CHI_SQUARED_OF_FIT |
NA |
FITS E |
|
NUMBER_DOF_OF_FIT |
NA |
FITS I |
||