ASTROSAT CZTI

Data Quality Report

Orbit 18689

Creation date: 2024-06-27T17:53:26.682119
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/AS1A05_072T04_9000002794_18689cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18689cztM0_level2_quad_clean.evt
Size (bytes)472,383,36092,171,520
Size450.5 MB 87.9 MB
Events in quadrant A3,319,204581,825
Events in quadrant B3,584,326591,435
Events in quadrant C3,641,118578,507
Events in quadrant D3,305,872572,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141022
B0149422
C0149662
D0142612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6706761.133313%
B67061251.864002%
C67061702.535043%
D6706620.924545%

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 7616 6707 6 6 0.08% 0.09%
B 7616 6707 23 23 0.30% 0.34%
C 7616 6707 19 19 0.25% 0.28%
D 7616 6707 3 3 0.04% 0.04%

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 52158 300.09 845 827 171.1
A 13 254 10793 58.26 845 827 171.1
A 0 226 7465 38.81 845 827 171.1
B 7 220 99020 610.46 844 823 160.9
B 0 197 52692 322.45 844 823 160.9
B 10 245 51330 313.98 844 823 160.9
C 9 54 248973 1309.58 817 821 189.5
C 14 238 128892 675.87 817 821 189.5
C 3 233 57149 297.26 817 821 189.5
D 1 52 78860 386.19 832 808 202.1
D 7 238 56677 276.43 832 808 202.1
D 2 234 28619 137.61 832 808 202.1

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