Science Frame Product¶
Data product name¶
DpdSirScienceFrame
Data product custodian¶
SIR
Data model tag¶
R-10.0
Name of the Schema file¶
euc-sir-ScienceFrame.xsdLast Edited for DPDD Version¶
2.0
Processing Elements Creating / Updating / Using the Product¶
- Creators:
SIR_Extract_Spectra
- Consumers:
SIR_Extract_Spectra
SIR_Calibration_Opt
SIR_Calibration_Crv
SIR_Calibration_Ids
SIR_Calibration_Rel
SIR_Calibration_Abs
Processing function using the data product¶
SIR
LE3
Proposed for inclusion in EAS/SAS¶
This product is proposed for inclusion in the SAS: yes
This product is used to store background subtracted frames. These frames will also contain the pointing correction computed by SIR.
Data product elements¶
- Header:
object of type sys:genericHeader
- Data:
object of type sir:scienceFrame
- QualityFlags:
object of type dqc:sqfPlaceHolder
- Parameters:
object of type ppr:genericKeyValueParameters
Detailed description of the data product¶
The Science Frame is produced at the end of the preprocessing steps and it represents data contained in the whole field of view. It is serialized into a multi extension FITS file. The primary extension does not contains data but only metadata about the pointing.
Data are stored into 48 extensions: 3 for each detector. The extensions are:
DETn.SCI: the extension containing dispersed image values on the n-th detector
DETn.VAR: the extension containing variance on image values
DETn.DQ: the extension containing pixel data quality. This layer is used to mark non-useful data values: bad pixels, cosmic rays, persistence and so on. The value of this layer is a bit mask which follow this convention:
0: hot pixel
1: cold pixel
2: saturated pixel
3: cosmic ray
4: satellite trail
5: interpolated pixel
6: bleeding
7: on-board masking
8: bad pixel
9: non-linear pixel
10: persistent charge pixel
11: ghost masking
12: transient object
13: extended object
14: scattered light pixel
15: charge injection
16: near charge injection