ASTROSAT CZTI

Data Quality Report

Orbit 09182

Creation date: 2024-06-27T15:42:24.428083
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/AS1C02_041T02_9000001282_09182cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09182cztM0_level2_quad_clean.evt
Size (bytes)567,648,00091,895,040
Size541.4 MB 87.6 MB
Events in quadrant A4,828,095562,383
Events in quadrant B3,858,311570,114
Events in quadrant C3,647,291559,304
Events in quadrant D4,322,660543,389

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193802
B0165671
C0163141
D0183001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78763975.040630%
B78763664.647029%
C78762703.428136%
D78765246.653123%

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 8126 7878 29 29 0.36% 0.37%
B 8126 7878 4 4 0.05% 0.05%
C 8126 7878 0 0 0.00% 0.00%
D 8126 7878 216 216 2.66% 2.74%

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 8 5 771475 3934.7 952 929 195.8
A 15 223 123886 627.86 952 929 195.8
A 1 162 104749 530.14 952 929 195.8
B 8 234 61993 328.79 956 931 185.7
B 0 214 25968 134.81 956 931 185.7
B 12 111 19981 102.58 956 931 185.7
C 13 61 7062 28.21 931 932 217.3
C 8 222 6036 23.49 931 932 217.3
C 8 128 4915 18.33 931 932 217.3
D 1 52 628679 2754.47 923 893 227.9
D 7 71 58563 253.03 923 893 227.9
D 2 14 54174 233.78 923 893 227.9

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