ASTROSAT CZTI

Data Quality Report

Orbit 09120

Creation date: 2024-06-27T15:41:32.819171
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/AS1A03_105T01_9000001268_09120cztM0_level2.evt modeM0/AS1A03_105T01_9000001268_09120cztM0_level2_quad_clean.evt
Size (bytes)470,338,56074,275,200
Size448.5 MB 70.8 MB
Events in quadrant A3,739,280457,606
Events in quadrant B3,100,056465,276
Events in quadrant C2,890,386450,651
Events in quadrant D4,090,409439,529

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150042
B0129441
C0127691
D0162751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6241901.442077%
B6241731.169684%
C6241170.272392%
D62412684.294184%

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 7386 6241 12 12 0.16% 0.19%
B 7386 6241 0 0 0.00% 0.00%
C 7386 6242 0 0 0.00% 0.00%
D 7386 6241 234 234 3.17% 3.75%

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 5 563842 3553.32 777 762 158.5
A 4 2 98826 618.83 777 762 158.5
A 1 162 51574 320.65 777 762 158.5
B 0 214 81299 541.31 775 758 148.8
B 12 111 16720 107.28 775 758 148.8
B 11 111 13290 84.23 775 758 148.8
C 13 61 5621 28.51 740 743 171.1
C 12 4 1951 7.06 740 743 171.1
C 3 202 1841 6.42 740 743 171.1
D 12 233 884420 4852.06 738 718 182.1
D 2 14 213864 1170.3 738 718 182.1
D 1 52 85578 465.93 738 718 182.1

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