ASTROSAT CZTI

Data Quality Report

Orbit 47817

Creation date: 2024-08-01T03:33:24.646185
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/AS1A13_081T01_9000006354_47817cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47817cztM0_level2_quad_clean.evt
Size (bytes)1,392,868,800290,511,360
Size1.3 GB 277.1 MB
Events in quadrant A18,772,8401,944,991
Events in quadrant B10,374,9691,991,775
Events in quadrant C7,989,8851,920,152
Events in quadrant D12,967,1551,640,835

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0683813
B0446803
C0385284
D0523533

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188336513.456698%
B188343301.752150%
C188331180.626560%
D1883313837.343493%

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 20288 18837 125 125 0.62% 0.66%
B 20289 18838 77 77 0.38% 0.41%
C 20288 18837 9 9 0.04% 0.05%
D 20288 18836 1057 1057 5.21% 5.61%

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 10 83 10640694 25391.93 2020 1972 419.0
A 7 3 117322 275.31 2020 1972 419.0
A 13 248 102724 240.47 2020 1972 419.0
B 10 7 1125342 2844.71 2016 1950 394.9
B 0 200 708543 1789.27 2016 1950 394.9
B 5 255 303317 763.14 2016 1950 394.9
C 14 254 79754 165.91 2002 2006 468.6
C 1 3 47530 97.14 2002 2006 468.6
C 12 2 32378 64.81 2002 2006 468.6
D 12 2 3720639 7743.71 1925 1862 480.2
D 2 165 880068 1828.71 1925 1862 480.2
D 2 249 215771 445.43 1925 1862 480.2

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