ASTROSAT CZTI

Data Quality Report

Orbit 31811

Creation date: 2024-06-27T20:33:03.131775
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_109T01_9000004646_31811cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31811cztM0_level2_quad_clean.evt
Size (bytes)664,994,88072,204,480
Size634.2 MB 68.9 MB
Events in quadrant A4,180,939445,217
Events in quadrant B5,813,534441,112
Events in quadrant C3,872,032425,080
Events in quadrant D5,823,422410,311

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164882
B0219702
C0155242
D0221143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66582974.460799%
B66582543.814959%
C66582904.355662%
D6657951.427069%

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 7588 6659 159 159 2.10% 2.39%
B 7588 6659 87 87 1.15% 1.31%
C 7588 6659 88 88 1.16% 1.32%
D 7587 6658 39 39 0.51% 0.59%

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 0 13 958231 5706.19 832 816 167.8
A 13 254 12019 66.77 832 816 167.8
A 3 137 8612 46.46 832 816 167.8
B 6 159 1744378 10965.72 826 806 159.0
B 10 245 360381 2261.45 826 806 159.0
B 4 80 261935 1642.3 826 806 159.0
C 0 10 508567 2715.87 789 795 187.0
C 14 238 156915 835.02 789 795 187.0
C 3 233 66746 352.75 789 795 187.0
D 8 195 2597446 13289.36 808 785 195.4
D 12 218 130150 662.07 808 785 195.4
D 2 234 26622 132.23 808 785 195.4

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