PHT Interactive Analysis User Manual - (V9.0)

3.3.2) The PIA SRD Window

The PIA SRD Window serves to control the processing from the SRD to the SCP level. It is reached via the button "Plot and Reduce Data" in the menu of the PIA Measurement Buffer Control Panel or it is automatically displayed when processing data from the PIA ERD Data Display Window. The maximum number of opened SRD Windows is restricted to two.

This chapter describes the PIA SRD Data Display window and directly associated sub-windows.

Basically, the SRD window (Figure 1) is divided into three rows:

FIGURE 1: The PIA SRD Window 

Remark on Upper and Middle Row:

Since the upper row and the middle row are very similar to those of the ERD Window, the user is referred to the ERD description with the following differences for the middle row:

  1. Menu bar on top: The submenu offers the following possibilities:
  2. Test Processing:

  3. In addition to Fourier, Average, Median and Discard and Reset Area graphically (note that on this level averages and medians can be obtained per chopper step), which are also present in the ERD window and described in the respective chapter, here test processing steps, specific for this level, can be selected:

The lower row


This menu bar calls a submenu with the following options:


This menu bar calls a submenu with the single option:


This menu bar calls a submenu for corrections to be applied to the measurement with the following options:


This menu bar calls a submenu for obtaining the following information:


This menu bar calls a submenu with additional features for array data. It offers the following option:


This menu bar calls a submenu in order to process the whole measurement to the next level. The submenu offers the following possibilities for determining the signal per chopper plateau: After a selection the processing immediately starts and the result will be displayed in a new SCP Window (s.3.3.3).


This menu bar is active only for C100, C200 and PHT-S data, where several pixels are to be analyzed. It calls a submenu with the following options:


This button is only for serendipity survey data. Problems may occur when pressing it for standard data.

N Plots

This button allows the number N of plot windows shown in the middle row of the SRD window to be selected. After a selection the window will immediately be refreshed, containing N plots. Please note that this number will be used also for further main level windows.


This button calls a submenu for accessing the Housekeeping Menu. The user has the choice of displaying the Housekeeping data associated only to this measurement or to the full TDT data (in the rule composed of several measurements), as contained in the corresponding GEHK FITS product.

The associated Windows

The PIA Signal Selection Window

Note: This window, displayed below, is very similar to the PIA Read-Out Selection Window. See for general description there. A special item by this window is the possibility of discarding a fixed fraction of data per chopper plateau in chopped measurements and staring / raster separately. (The tables for the corrections compensating for signal losses by chopped measurements which are not processed via the "Ramps Pattern" procedure have been derived using only the second half of each chopper plateau. therefore this selection is the default one.)

The PIA Signal Deglitching Parameters Window

It is shown below. Please see Signal Deglitching correction in chapter 5 on processing algorithms, for an explanation of the parameters.

FIGURE 3: The PIA Signal Deglitching Parameters Window 

The PIA Drift Stability Analysis window:

An example is shown in the figure below. Please see the Stability Analysis in the processing algorithms chapter (c.4) for an explanation of the parameters.

FIGURE 4: The PIA Drift Stability Analysis Window 

The PIA Signal Drifts Modellling window:

Figure 5 shows the Drifts Modelling window. Please refer to the Signal Drifts modelling section (s.3.3.5) for an explanation
Chapter history:
Date  Author  Description 
16/05/1996 Martin Haas (MPIA) / Carlos Gabriel (ESA)  First Version 
03/09/1996  Carlos Gabriel (ESA/VILSPA-SAI)  Update
03/03/1997 Carlos Gabriel (ESA/VILSPA-SAI)  Update
6/06/1997 Carlos Gabriel (ESA/VILSPA-SAI)  Update (V6.3)
10/10/1997 Carlos Gabriel (ESA/VILSPA-SAI)  Update (V6.5)
13/02/1998 Carlos Gabriel (ESA/VILSPA-SAI)  Update (V7.0)
23/08/1999 Carlos Gabriel (ESA/VILSPA-SAI) Update (V8.0)