ASTROSAT CZTI

Data Quality Report

Orbit 31098

Creation date: 2024-06-27T20:23:20.888278
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/AS1A10_109T01_9000004492_31098cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31098cztM0_level2_quad_clean.evt
Size (bytes)677,554,560122,529,600
Size646.2 MB 116.9 MB
Events in quadrant A3,867,571811,326
Events in quadrant B6,105,489800,536
Events in quadrant C4,403,131782,227
Events in quadrant D5,607,041765,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166793
B0242463
C0181883
D0221973

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79272523.179008%
B79284615.814834%
C79274615.815567%
D79272683.380850%

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 8247 7931 0 0 0.00% 0.00%
B 8248 7932 0 0 0.00% 0.00%
C 8247 7931 107 107 1.30% 1.35%
D 8247 7931 92 92 1.12% 1.16%

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 13264 60.69 1002 980 202.4
A 3 137 10667 47.86 1002 980 202.4
A 0 226 8338 36.35 1002 980 202.4
B 6 159 2207691 11559.28 983 959 190.9
B 12 111 24419 122.89 983 959 190.9
B 11 111 22213 111.33 983 959 190.9
C 10 22 346313 1525.22 957 963 226.4
C 14 238 151685 665.66 957 963 226.4
C 0 10 146238 641.6 957 963 226.4
D 13 174 1475225 6304.7 969 945 233.8
D 8 195 444939 1898.72 969 945 233.8
D 2 234 34314 142.7 969 945 233.8

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