ASTROSAT CZTI

Data Quality Report

Orbit 02205

Creation date: 2024-06-27T14:15:14.446024
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/AS1T01_072T04_9000000342_02205cztM0_level2.evt modeM0/AS1T01_072T04_9000000342_02205cztM0_level2_quad_clean.evt
Size (bytes)1,001,180,16067,651,200
Size954.8 MB 64.5 MB
Events in quadrant A3,787,953496,927
Events in quadrant B3,550,050509,752
Events in quadrant C18,910,53026,142
Events in quadrant D3,553,292480,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168734
B0159733
C0617223
D0163023

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76591662.167385%
B76591752.284894%
C76597659100.000000%
D76591061.383993%

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 7849 7661 5 5 0.06% 0.07%
B 7848 7661 2 2 0.03% 0.03%
C 7849 7662 6358 6358 81.00% 82.98%
D 7848 7661 20 20 0.25% 0.26%

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 15 171 380384 2099.48 876 854 180.8
A 10 2 25535 136.53 876 854 180.8
A 12 194 9868 49.86 876 854 180.8
B 15 85 33945 189.86 897 871 174.2
B 6 219 20800 114.4 897 871 174.2
B 3 0 18615 101.86 897 871 174.2
C 7 111 5770905 70038.79 106 94 82.4
C 0 187 2486106 30172.06 106 94 82.4
C 7 247 1298682 15760.61 106 94 82.4
D 7 223 240264 1174.91 851 826 203.8
D 10 149 37387 179.4 851 826 203.8
D 15 194 15981 74.36 851 826 203.8

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