ASTROSAT CZTI

Data Quality Report

Orbit 31112

Creation date: 2024-06-27T20:23:31.409900
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_109T01_9000004492_31112cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31112cztM0_level2_quad_clean.evt
Size (bytes)600,171,840116,478,720
Size572.4 MB 111.1 MB
Events in quadrant A3,629,069770,484
Events in quadrant B5,822,123760,026
Events in quadrant C3,867,118741,009
Events in quadrant D4,346,191730,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156671
B0229701
C0162171
D0176651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75571261.667328%
B75572443.228794%
C75572353.109700%
D75582022.672665%

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 7687 7558 0 0 0.00% 0.00%
B 7687 7558 0 0 0.00% 0.00%
C 7687 7558 5 5 0.07% 0.07%
D 7688 7559 98 98 1.27% 1.30%

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 13 254 12154 59.16 941 923 189.8
A 3 137 9965 47.63 941 923 189.8
A 0 226 7640 35.39 941 923 189.8
B 6 159 2097840 11746.44 923 903 178.5
B 0 190 56717 312.65 923 903 178.5
B 12 111 22877 123.09 923 903 178.5
C 14 238 144764 671.12 906 914 214.3
C 0 10 85405 394.19 906 914 214.3
C 10 22 63881 293.77 906 914 214.3
D 8 195 388239 1656.5 902 886 233.8
D 14 50 297579 1268.79 902 886 233.8
D 13 174 210372 895.86 902 886 233.8

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