ASTROSAT CZTI

Data Quality Report

Orbit 43859

Creation date: 2024-06-27T22:56:37.782941
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_087T01_9000005908_43859cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43859cztM0_level2_quad_clean.evt
Size (bytes)1,603,419,840295,876,800
Size1.5 GB 282.2 MB
Events in quadrant A11,264,6312,044,792
Events in quadrant B11,751,7082,034,130
Events in quadrant C21,054,1041,841,332
Events in quadrant D13,791,4321,705,821

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0454856
B0482594
C07625130
D0546544

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193261760.910690%
B193289514.920323%
C19323215611.157688%
D1932812986.715646%

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 20482 19331 21 21 0.10% 0.11%
B 20483 19329 466 466 2.28% 2.41%
C 20482 19329 1934 1934 9.44% 10.01%
D 20483 19332 1250 1250 6.10% 6.47%

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 2453975 5450.1 2176 2135 449.9
A 2 79 114500 249.77 2176 2135 449.9
A 15 223 87578 189.93 2176 2135 449.9
B 5 172 1452270 3452.95 2133 2065 420.0
B 5 235 1271784 3023.21 2133 2065 420.0
B 4 170 270142 638.29 2133 2065 420.0
C 3 233 6959036 14323.55 2049 2056 485.7
C 0 239 3146374 6473.76 2049 2056 485.7
C 15 158 2336575 4806.48 2049 2056 485.7
D 2 249 3284820 6262.8 2066 2002 524.2
D 1 52 571951 1087.32 2066 2002 524.2
D 13 249 545941 1037.7 2066 2002 524.2

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