ASTROSAT CZTI

Data Quality Report

Orbit 31011

Creation date: 2024-06-27T20:22:16.868042
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/AS1A10_071T52_9000004480_31011cztM0_level2.evt modeM0/AS1A10_071T52_9000004480_31011cztM0_level2_quad_clean.evt
Size (bytes)653,273,28077,405,760
Size623.0 MB 73.8 MB
Events in quadrant A3,648,691476,370
Events in quadrant B5,915,208476,674
Events in quadrant C3,933,545456,578
Events in quadrant D5,771,457404,127

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156212
B0231502
C0163102
D0219822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76171722.258107%
B76182603.412969%
C76182393.137306%
D76187609.976372%

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 7782 7617 0 0 0.00% 0.00%
B 7783 7618 4 4 0.05% 0.05%
C 7783 7618 11 11 0.14% 0.14%
D 7783 7619 470 470 6.04% 6.17%

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 13 254 14021 67.71 942 918 193.5
A 11 47 13227 63.6 942 918 193.5
A 3 137 9945 46.65 942 918 193.5
B 6 159 2114880 11679.03 927 901 181.0
B 0 190 63830 347.66 927 901 181.0
B 0 230 37801 203.86 927 901 181.0
C 0 10 242147 1133.64 899 904 212.8
C 14 238 143888 671.91 899 904 212.8
C 10 22 20538 92.26 899 904 212.8
D 12 218 1560576 7391.71 870 845 211.0
D 8 195 554968 2626.04 870 845 211.0
D 12 250 145898 687.42 870 845 211.0

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