ASTROSAT CZTI

Data Quality Report

Orbit 22716

Creation date: 2024-06-27T18:44:47.333058
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/AS1A08_007T01_9000003362_22716cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22716cztM0_level2_quad_clean.evt
Size (bytes)512,300,160103,795,200
Size488.6 MB 99.0 MB
Events in quadrant A3,566,600668,394
Events in quadrant B3,730,315668,799
Events in quadrant C3,612,480640,655
Events in quadrant D4,086,068633,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156903
B0159683
C0157373
D0173543

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7644881.151230%
B76431081.413058%
C76431211.583148%
D76431742.276593%

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 7884 7647 2 2 0.03% 0.03%
B 7883 7646 0 0 0.00% 0.00%
C 7883 7646 2 2 0.03% 0.03%
D 7883 7646 78 78 0.99% 1.02%

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 14837 74.89 921 899 186.1
A 0 226 8051 38.43 921 899 186.1
A 3 137 7625 36.14 921 899 186.1
B 0 219 36007 202.67 918 895 173.2
B 0 190 23943 133.04 918 895 173.2
B 0 197 23619 131.17 918 895 173.2
C 14 238 136418 660.5 876 880 205.2
C 10 23 22187 103.83 876 880 205.2
C 10 22 18174 84.28 876 880 205.2
D 12 233 209447 972.61 885 858 214.5
D 1 52 144750 670.94 885 858 214.5
D 12 227 86317 398.48 885 858 214.5

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