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HAWKI Quality Control:
Zero_Point

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QUALITY CONTROL
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HAWK-I QC
Trending & QC1
   ZPoint
Pipeline
Data Packages
Data Management
QC links:
hawki_zp : HAWK-I_QC_ZPOINT | HAWK-I_QC_PEAK
 
QC PLOTS
  CURRENT HISTORY
Daily Health Checks:    
ZPOINT Y
ZPOINT J
ZPOINT H
ZPOINT Ks
PEAK Y
PEAK J
PEAK H
PEAK Ks
QC1 hawki_zp database (advanced users): browse | plot
   Click on CURRENT to see the last trending (Health Check).
   Click on HISTORY to see the historical evolution of the trending.


top Introduction

This tutorial provides information for the the Z-Point Health Check trending.
The Z-Point trending is based on the measurement of QC1 parameters of photometric standard star calibration data obtained with OBs executed according to the calibration plan, meaning at least one set of J, H, Ks, & Y obserations of at least one standard star every photometric or clear night during which HAWK-I SCIENCE observations are made.
Each standard star OB obtains 1 set of standard star data in one filter comprised of four RAW data files, with the standard star placed at the center of the each detector sequentially.
The Computed zeropoint, corrected for atmospheric extinction and the maximum counts in ADU in the standard star are monitored for each detector.

top HAWK-I_QC_ZPOINT

QC1 parameters

  • Extinction corrected zero-point (QC1 database table hawki_zp, column qc_atx0, product keyword QC.ATX0)
    Description: Extinction corrected zero-point.
  • source peak value (QC1 database table hawki_zp, column qc_zpoint_peak, product keyword QC.ZPOINT.PEAK)
    Description: Peak counts in the center of the source in ADU.

 

 


 
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