ASTROSAT CZTI

Data Quality Report

Orbit 20170302_G06_064T01_9000001066_level2

Creation date: 2025-11-09T21:35:35.707578
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/AS1G06_064T01_9000001066cztM0_level2.fits modeM0/AS1G06_064T01_9000001066cztM0_level2_quad_clean.evt
Size (bytes)1,972,333,4401,939,343,040
Size1.8 GB 1.8 GB
Events in quadrant A11,856,22811,649,301
Events in quadrant B11,454,30211,678,906
Events in quadrant C11,812,60011,004,660
Events in quadrant D10,089,0369,885,973

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043100
B043100
C043100
D043100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04405340
B04511740
C04389110
D04836060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21197330851.455374%
B21197237381.763440%
C21197219170.904365%
D21197068723.241968%

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 243852 211954 0 0 0.00% 0.00%
B 243852 211950 0 0 0.00% 0.00%
C 243852 211966 0 0 0.00% 0.00%
D 243852 211739 0 0 0.00% 0.00%

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 14 188 12188 12.05 3080 2866 773.4
A 0 29 11813 11.57 3080 2866 773.4
A 14 204 10466 9.83 3080 2866 773.4
B 2 9 9865 11.75 3020 2867 595.6
B 14 254 7888 8.43 3020 2867 595.6
B 3 17 7868 8.4 3020 2867 595.6
C 1 80 8726 7.15 3120 2888 816.8
C 1 81 8535 6.91 3120 2888 816.8
C 12 241 8249 6.56 3120 2888 816.8
D 3 14 7599 6.57 2875 2615 759.1
D 6 231 7386 6.28 2875 2615 759.1
D 7 5 7147 5.97 2875 2615 759.1

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