aklab.qulee module#

“Qulee” (pronounced as “KLEE”), is ULVAC’s latest model for residual gas analysis.

Tools to work with Qulee mass spectrometer outputs (CSV) and maybe later with Qulee software? Created 2021/06/11 by queezz

class aklab.qulee.QMS(datapath)[source]#

Bases: object

Read Qulee QMS CSV file, generate pandas.DataFrame, plot data.

Parameters

datapath (string) – path to converted to csv format Qulee QMS data.

load_data()[source]#

Generates DataFrame from qms data with proper datetime column for time

plot(**kws)[source]#

Plot time traces

Parameters

  • masslist (list) – Specify list of masses to plot. Plots all by default.

  • delta (list) – delta = [self.start, self.end] by default, datetime.datetime “window”

  • ylim (list or tuple) – axis ylims

  • gridalpha (float) – transparancy of the grid lines

  • figsize (tuple) – figure size, (8,6) by default

  • rasterized (bool) – rasterized option for matplotlib

  • colors (list) – list of colors for color cycle

  • bbox_to_anchor (list or tuple) – bbox_to_anchor argument for matplotlib legend

qms_file_parser()[source]#

Parses the QMS csv file header.

slice(delta)[source]#

Slice DataFrame by datetime interval

Parameters

delta (list) – list of datetime.dateme objects for the start and the end of an interval

Returns

data – sliced qms dataframe

Return type

pandas.DataFrame

aklab.qulee.generate_colors(masslist, **kws)[source]#

Generate colors based on masslist

Parameters

  • masslist (list) – list of masses to be plotted

  • cmap (matplotlib colormap for color cycle) –

Returns

clr – list of colors

Return type

list

aklab.qulee.plot_qms_dir(dir='', ls=[], out='batch_qms_plot.pdf', **kws)[source]#

Plot QMS files in a directory or from a list.

Parameters

  • ls (list) – list of absolute paths to files to plot

  • dir (string) – directory to scan and plot

  • out (string) – output pdf file name or absolute path

  • ext (string) – files extention, CSV by default

  • figsize (float) – figure width, 500 by default

  • anchor (list) – Matplotlib bbox_to_inches [1,1]

  • rasterized (bool) – Matplotlib s rasterized option, when there are too many lines for a PDF

  • ylim (list or tuple) – by default [1e-14,1e-5]

aklab.qulee.qmsplotgrid(ax, **kws)[source]#

QMS plot grid

aklab.qulee.qmsplotticks(ax)[source]#

QMS plot ticks

aklab.qulee.t2s(t)[source]#

Convert a time string of the Qulee format, ‘000:00:00.625’ -> ‘hhh:mm:ss.ms’ to time in seconds. E.g ‘000:00:00.625’ to 0.625 (s)

Parameters

t (string) – Qulee time stamp string

Returns

t – datetime timedelta in seconds

Return type

datetime.timedelta

aklab.qulee.t2sa(ta)[source]#

Convert an array of Qulee time stamp strings to array of datetime.timedelta in seconds. Just calls t2s() in a loop.

Parameters

ta (array-like) – array of time-strings from Qulee QMS

Returns

timearray – numpy array with datetime.timedelta in seconds

Return type

numpy.array

aklab.qulee.tocsv(filename, **kws)[source]#

Convert *.qst binary into a *.csv. Works only with Quelee QMS software installed.

Parameters

filename (string) – path to *.qst file.