ASTROSAT CZTI

Data Quality Report

Orbit 20312

Creation date: 2024-06-27T18:13:45.893980
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_174T01_9000003008_20312cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20312cztM0_level2_quad_clean.evt
Size (bytes)698,091,84087,076,800
Size665.8 MB 83.0 MB
Events in quadrant A4,090,513536,887
Events in quadrant B3,921,484554,148
Events in quadrant C9,178,584503,238
Events in quadrant D3,456,464532,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169052
B0162202
C0323622
D0153783

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73133544.840695%
B73133314.526186%
C7313127117.380008%
D73132273.104061%

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 7448 7315 60 60 0.81% 0.82%
B 7448 7316 45 45 0.60% 0.62%
C 7448 7316 562 562 7.55% 7.68%
D 7448 7316 11 11 0.15% 0.15%

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 14 238 424248 2286.42 897 874 185.2
A 4 2 163984 880.87 897 874 185.2
A 12 96 29958 157.07 897 874 185.2
B 7 220 167553 959.7 891 869 173.7
B 4 142 145018 829.96 891 869 173.7
B 0 197 25670 142.79 891 869 173.7
C 3 9 5774815 29266.74 837 841 197.3
C 14 238 126641 637.65 837 841 197.3
C 3 233 12071 56.92 837 841 197.3
D 2 184 47761 214.94 893 868 218.2
D 2 234 29726 132.27 893 868 218.2
D 2 153 11541 48.92 893 868 218.2

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