ASTROSAT CZTI

Data Quality Report

Orbit 20190808_A06_002T03_9000003080_level2

Creation date: 2021-08-31T19:13:04.736472
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A06_002T03_9000003080cztM0_level2_bc.evt modeM0/AS1A06_002T03_9000003080cztM0_level2_quad_clean.evt
Size (bytes)6,295,904,6401,953,636,480
Size5.9 GB 1.8 GB
Events in quadrant A32,504,75512,572,214
Events in quadrant B36,979,16112,622,499
Events in quadrant C31,391,99812,351,809
Events in quadrant D79,864,56711,622,556

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02310
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03073160
B03262440
C03092290
D04550400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029720
B029700
C029720
D029720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14603118281.251789%
B14602926951.845524%
C14603128901.979032%
D146029126648.672250%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 196388 146046 28 28 0.01% 0.02%
B 196388 146039 18 18 0.01% 0.01%
C 196387 146034 9 9 0.00% 0.01%
D 196388 146039 5531 5531 2.82% 3.79%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 835717 476.74 8016 7895 1736.4
A 5 16 658953 374.95 8016 7895 1736.4
A 15 174 179414 98.78 8016 7895 1736.4
B 7 220 2079164 1377.2 8066 7880 1504.0
B 0 189 956577 630.79 8066 7880 1504.0
B 3 64 601339 394.59 8066 7880 1504.0
C 9 54 1245640 679.38 7770 7756 1822.1
C 10 91 173568 91.0 7770 7756 1822.1
C 13 61 45097 20.49 7770 7756 1822.1
D 1 52 21070788 11663.79 7758 7504 1805.9
D 1 239 16112624 8918.21 7758 7504 1805.9
D 1 20 4770203 2637.34 7758 7504 1805.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter