ASTROSAT CZTI

Data Quality Report

Orbit 20319

Creation date: 2024-06-27T18:13:49.460443
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_174T01_9000003008_20319cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20319cztM0_level2_quad_clean.evt
Size (bytes)480,251,520101,419,200
Size458.0 MB 96.7 MB
Events in quadrant A3,421,114651,237
Events in quadrant B3,615,762668,043
Events in quadrant C3,445,860644,308
Events in quadrant D3,594,795628,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145752
B0151152
C0145253
D0152722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6873540.785683%
B68731171.702313%
C6873851.236723%
D6873570.829332%

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 9013 6875 0 0 0.00% 0.00%
B 9013 6875 15 15 0.17% 0.22%
C 9013 6875 0 0 0.00% 0.00%
D 9013 6875 19 19 0.21% 0.28%

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 14 238 61935 350.17 866 848 174.4
A 13 254 11231 59.52 866 848 174.4
A 11 29 9991 52.41 866 848 174.4
B 7 220 94924 570.56 867 845 164.9
B 0 197 48698 290.21 867 845 164.9
B 10 247 28640 168.57 867 845 164.9
C 14 238 133215 672.57 843 852 196.8
C 0 207 20490 99.79 843 852 196.8
C 3 9 6723 29.83 843 852 196.8
D 1 52 183299 892.04 850 826 204.6
D 9 1 95166 461.19 850 826 204.6
D 2 184 78851 381.43 850 826 204.6

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