ASTROSAT CZTI

Data Quality Report

Orbit 20603

Creation date: 2024-06-27T18:17:18.770024
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/AS1A06_003T04_9000003046_20603cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20603cztM0_level2_quad_clean.evt
Size (bytes)566,982,720103,599,360
Size540.7 MB 98.8 MB
Events in quadrant A3,612,934664,701
Events in quadrant B3,884,572677,119
Events in quadrant C3,679,246654,820
Events in quadrant D5,484,965618,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159552
B0167932
C0158853
D0214042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7504791.052772%
B75041361.812367%
C75031191.586032%
D75034656.197521%

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 7909 7505 10 10 0.13% 0.13%
B 7909 7505 17 17 0.21% 0.23%
C 7908 7504 4 4 0.05% 0.05%
D 7908 7504 343 343 4.34% 4.57%

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 8 31 69927 379.36 899 879 182.0
A 9 143 27633 146.99 899 879 182.0
A 12 16 26941 143.19 899 879 182.0
B 7 220 222293 1268.17 900 875 174.6
B 0 189 40722 228.22 900 875 174.6
B 0 197 39771 222.78 900 875 174.6
C 8 208 135601 658.89 865 871 204.5
C 14 238 134823 655.08 865 871 204.5
C 9 54 21993 103.3 865 871 204.5
D 5 222 1188363 5673.92 854 829 209.3
D 1 20 790647 3773.67 854 829 209.3
D 13 153 115905 549.82 854 829 209.3

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