ASTROSAT CZTI

Data Quality Report

Orbit 34822

Creation date: 2022-03-08T00:01:00.817344
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/AS1C07_005T01_9000004992_34822cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34822cztM0_level2_quad_clean.evt
Size (bytes)806,837,76083,321,280
Size769.5 MB 79.5 MB
Events in quadrant A3,089,039647,536
Events in quadrant B14,372,206226,611
Events in quadrant C2,941,399640,468
Events in quadrant D3,651,025611,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129922
B0465851
C0122311
D0146381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5640510.904255%
B56405640100.000000%
C5640430.762411%
D56401142.021277%

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 7222 5641 32 32 0.44% 0.57%
B 7221 5639 5539 5539 76.71% 98.23%
C 7222 5641 31 31 0.43% 0.55%
D 7222 5641 99 99 1.37% 1.76%

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 15 169 500462 3843.05 641 629 130.1
A 10 83 55647 423.01 641 629 130.1
A 7 16 20102 149.72 641 629 130.1
B 5 14 3979137 78830.04 255 249 50.5
B 5 31 3881005 76885.84 255 249 50.5
B 5 15 3857031 76410.87 255 249 50.5
C 15 214 259718 1816.84 616 619 142.6
C 0 10 137918 962.76 616 619 142.6
C 14 67 92120 641.62 616 619 142.6
D 8 195 554033 3333.44 609 594 166.0
D 10 118 206014 1237.27 609 594 166.0
D 2 250 135916 815.06 609 594 166.0

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