ASTROSAT CZTI

Data Quality Report

Orbit 04255

Creation date: 2024-06-27T14:39:25.184909
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/AS1G05_240T01_9000000536_04255cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04255cztM0_level2_quad_clean.evt
Size (bytes)451,321,92062,856,000
Size430.4 MB 59.9 MB
Events in quadrant A3,181,472375,697
Events in quadrant B3,296,920380,311
Events in quadrant C2,983,616365,333
Events in quadrant D3,786,175349,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130923
B0133282
C0128412
D0152102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6184841.358344%
B6184811.309832%
C6184671.083441%
D61841011.633247%

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 7509 6186 3 3 0.04% 0.05%
B 7509 6186 2 2 0.03% 0.03%
C 7509 6186 16 16 0.21% 0.26%
D 7509 6186 44 44 0.59% 0.71%

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 50 76905 485.26 781 767 156.9
A 0 149 66882 421.38 781 767 156.9
A 0 226 15032 90.92 781 767 156.9
B 3 0 84824 561.73 783 766 149.6
B 15 204 61790 407.8 783 766 149.6
B 14 167 28206 183.37 783 766 149.6
C 9 144 81838 474.13 739 745 171.0
C 7 174 11717 64.15 739 745 171.0
C 13 61 6118 31.41 739 745 171.0
D 11 132 498265 2786.65 746 725 178.5
D 13 239 139819 779.05 746 725 178.5
D 1 52 108955 606.18 746 725 178.5

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