ASTROSAT CZTI

Data Quality Report

Orbit 12467

Creation date: 2024-06-27T16:27:48.573798
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/AS1A04_174T01_9000001850_12467cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12467cztM0_level2_quad_clean.evt
Size (bytes)840,876,48087,206,400
Size801.9 MB 83.2 MB
Events in quadrant A13,100,246469,274
Events in quadrant B4,106,605555,872
Events in quadrant C3,632,082555,909
Events in quadrant D4,105,182522,102

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442992
B0169481
C0158791
D0174381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7721361746.846263%
B77212733.535811%
C77211231.593058%
D77212312.991840%

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 7831 7721 2288 2288 29.22% 29.63%
B 7832 7724 26 26 0.33% 0.34%
C 7832 7724 0 0 0.00% 0.00%
D 7832 7723 86 86 1.10% 1.11%

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 13 251 8387759 49981.36 817 801 167.8
A 0 23 1231028 7331.43 817 801 167.8
A 0 226 87162 514.66 817 801 167.8
B 4 239 249344 1359.37 950 924 182.7
B 11 51 42785 229.07 950 924 182.7
B 0 187 36927 197.01 950 924 182.7
C 13 61 6838 27.18 929 934 217.2
C 3 233 6225 24.36 929 934 217.2
C 8 128 2516 7.28 929 934 217.2
D 7 80 217785 977.05 913 886 222.0
D 13 104 136539 611.07 913 886 222.0
D 13 249 115128 514.62 913 886 222.0

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