ASTROSAT CZTI

Data Quality Report

Orbit 31460

Creation date: 2024-06-27T20:28:47.754749
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/AS1T04_029T01_9000004582_31460cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31460cztM0_level2_quad_clean.evt
Size (bytes)629,746,56089,300,160
Size600.6 MB 85.2 MB
Events in quadrant A3,491,567564,693
Events in quadrant B5,767,042563,802
Events in quadrant C5,186,630533,963
Events in quadrant D4,132,188532,912

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149681
B0222922
C0201521
D0169751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73091542.106991%
B73092253.078396%
C73093394.638117%
D73091291.764947%

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 7534 7309 0 0 0.00% 0.00%
B 7534 7309 1 1 0.01% 0.01%
C 7534 7309 7 7 0.09% 0.10%
D 7534 7309 10 10 0.13% 0.14%

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 11824 59.91 905 886 182.6
A 3 137 9821 48.94 905 886 182.6
A 0 226 7547 36.49 905 886 182.6
B 6 159 2113661 12307.56 885 863 171.7
B 0 190 90993 525.03 885 863 171.7
B 4 80 57615 330.59 885 863 171.7
C 3 233 1618007 7959.54 860 864 203.2
C 14 238 141773 693.55 860 864 203.2
C 0 10 27499 131.09 860 864 203.2
D 8 195 791040 3804.7 874 850 207.7
D 2 234 28164 131.51 874 850 207.7
D 2 250 25135 116.93 874 850 207.7

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