ASTROSAT CZTI

Data Quality Report

Orbit 14274

Creation date: 2024-06-27T16:52:47.403573
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/AS1G08_014T01_9000002104_14274cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14274cztM0_level2_quad_clean.evt
Size (bytes)2,436,935,040383,189,760
Size2.3 GB 365.4 MB
Events in quadrant A15,962,4922,456,492
Events in quadrant B17,219,1652,444,875
Events in quadrant C16,241,6042,335,744
Events in quadrant D22,290,2702,237,865

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06320
B06320
C06320
D06320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660167
B0699416
C0657156
D0860106

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A310065041.625492%
B310068012.583371%
C310063721.199768%
D3100616295.253822%

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 37802 31011 12 12 0.03% 0.04%
B 37802 31012 170 170 0.45% 0.55%
C 37802 31013 3 3 0.01% 0.01%
D 37802 31013 956 956 2.53% 3.08%

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 12 189 450832 564.3 3991 3909 792.0
A 8 15 45906 53.03 3991 3909 792.0
A 9 143 40990 46.82 3991 3909 792.0
B 0 229 1119170 1521.2 3917 3822 733.2
B 10 245 254792 342.29 3917 3822 733.2
B 3 209 186419 249.04 3917 3822 733.2
C 3 233 1318932 1509.7 3821 3847 871.1
C 13 61 27152 26.75 3821 3847 871.1
C 14 234 18764 17.12 3821 3847 871.1
D 5 222 3757060 4197.93 3806 3719 894.1
D 12 110 1274642 1421.47 3806 3719 894.1
D 8 195 1034833 1153.25 3806 3719 894.1

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