ASTROSAT CZTI

Data Quality Report

Orbit 16620

Creation date: 2024-06-27T17:25:13.646817
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/AS1A05_064T01_9000002450_16620cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16620cztM0_level2_quad_clean.evt
Size (bytes)551,076,480138,337,920
Size525.5 MB 131.9 MB
Events in quadrant A3,952,589919,779
Events in quadrant B3,816,646938,009
Events in quadrant C4,352,573912,030
Events in quadrant D4,057,423896,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171823
B0165622
C0178672
D0169342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75201942.579787%
B7520921.223404%
C75201522.021277%
D7520630.837766%

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 7916 7522 86 86 1.09% 1.14%
B 7916 7522 10 10 0.13% 0.13%
C 7916 7522 0 0 0.00% 0.00%
D 7916 7522 36 36 0.45% 0.48%

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 15 174 585945 3344.9 862 841 174.9
A 4 2 24930 137.71 862 841 174.9
A 3 1 13929 74.82 862 841 174.9
B 7 220 81750 487.95 870 846 165.8
B 0 197 53786 319.29 870 846 165.8
B 0 189 53353 316.68 870 846 165.8
C 3 233 917952 4726.41 839 842 194.0
C 14 238 130081 666.04 839 842 194.0
C 7 247 32603 163.68 839 842 194.0
D 1 52 633089 3098.56 845 821 204.1
D 10 70 85749 416.21 845 821 204.1
D 7 38 51927 250.46 845 821 204.1

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