How to display a spectral file

The pulse height spectrum (or spectra) within a data file can be displayed using the qcl procedure pl_phad.qcl. The following example displays the top- and mid-layer spectra within the file mkn335_91a.phad, which has only one time bin.

qcl>.pl_phad
QCL_CL HDS file name = mkn335_91a.time =mkn335_91a.phad
QCL_CL graphics device = /xw =
 Data file has 2 ID channels
QCL_CL no.of ID combinations to plot = 2 =
QCL_CL det ID comb =            1 =1
QCL_CL det ID comb =            2 =2
QCL_CL label plot [Y/N] = N =
    Graphics device /xw open
    HDS_NODE mkn335_91a.phad
    GRP_DATYPE PHA             
    GRP_ISEL            1
    GRP_COMB 1
    LABX  PHA data channel                                            
    LABY  Count rate                                                  
    Number of data points           48
    Range of data points
    X  0.500000     to   48.5000    
    Y -0.277086E-01 to  0.281860E-01
QCL_CL plot YMIN = 0.0 =-0.1
QCL_CL plot YMAX = 3.38232240000000E-02 =0.1
    Mapping   0.5000000       48.50000     -0.1000000      0.1000000
    Position  0.500000      0.000000E+00
    Position   48.5000      0.000000E+00
    HDS_NODE mkn335_91a.phad
    GRP_DATYPE PHA             
    GRP_ISEL            1
    GRP_COMB 2
    LABX  PHA data channel                                            
    LABY  Count rate                                                  
    Number of data points           48
    Range of data points
    X  0.500000     to   48.5000    
    Y -0.129588E-01 to  0.124728E-01
    Mapping   0.5000000       48.50000     -0.1000000      0.1000000
    Position  0.500000      0.000000E+00
    Position   48.5000      0.000000E+00
  Device still open ...!
  Type CLOSE to finish
qcl>close