ASTROSAT CZTI

Data Quality Report

Orbit 20210512_A10_053T20_9000004372_level2

Creation date: 2021-05-15T16:22:32.292168
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/AS1A10_053T20_9000004372cztM0_level2_bc.evt modeM0/AS1A10_053T20_9000004372cztM0_level2_quad_clean.evt
Size (bytes)728,127,360234,083,520
Size694.4 MB 223.2 MB
Events in quadrant A3,814,0111,543,655
Events in quadrant B8,242,7451,554,925
Events in quadrant C3,552,2881,475,146
Events in quadrant D5,405,9451,470,952

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334530
B0474230
C0333970
D0386270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A151622411.589500%
B151624432.921778%
C151625003.297718%
D151624442.928374%

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 19032 15161 1 1 0.01% 0.01%
B 19032 15159 2 2 0.01% 0.01%
C 19032 15160 0 0 0.00% 0.00%
D 19032 15160 24 24 0.13% 0.16%

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 0 13 202157 1027.71 918 905 195.8
A 8 192 35897 178.69 918 905 195.8
A 13 254 27775 137.21 918 905 195.8
B 6 159 4335407 25162.13 923 906 172.3
B 0 229 303302 1755.43 923 906 172.3
B 5 172 61951 354.37 923 906 172.3
C 10 22 74212 360.82 871 874 203.3
C 3 233 51790 250.5 871 874 203.3
C 14 254 49906 241.23 871 874 203.3
D 8 195 1466804 7442.48 886 861 197.0
D 13 104 344327 1743.75 886 861 197.0
D 13 249 97976 493.05 886 861 197.0

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