ASTROSAT CZTI

Data Quality Report

Orbit 04780

Creation date: 2024-06-27T14:46:53.656719
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/AS1G05_218T05_9000000602_04780cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04780cztM0_level2_quad_clean.evt
Size (bytes)744,281,28084,363,840
Size709.8 MB 80.5 MB
Events in quadrant A4,191,842498,917
Events in quadrant B3,745,772527,899
Events in quadrant C5,309,987512,139
Events in quadrant D8,757,384464,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181154
B0165283
C0214003
D0316763

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7901122615.517023%
B7901861.088470%
C79014896.189090%
D7901121015.314517%

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 9116 7904 18 18 0.20% 0.23%
B 9116 7904 1 1 0.01% 0.01%
C 9116 7904 260 260 2.85% 3.29%
D 9116 7904 946 946 10.38% 11.97%

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 14 111 602690 3365.42 877 857 178.8
A 0 50 145090 806.54 877 857 178.8
A 8 15 56736 312.47 877 857 178.8
B 14 167 53696 295.29 924 899 178.8
B 4 80 52867 290.66 924 899 178.8
B 15 204 24929 134.4 924 899 178.8
C 14 48 1862110 9056.39 878 881 205.5
C 1 16 10717 47.86 878 881 205.5
C 13 61 7205 30.77 878 881 205.5
D 11 132 2837383 13958.89 839 812 203.2
D 13 235 2365157 11635.04 839 812 203.2
D 2 136 183732 900.15 839 812 203.2

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