ASTROSAT CZTI

Data Quality Report

Orbit 20131

Creation date: 2024-06-27T18:11:38.154754
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/AS1A05_180T01_9000002992_20131cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20131cztM0_level2_quad_clean.evt
Size (bytes)504,938,88092,301,120
Size481.5 MB 88.0 MB
Events in quadrant A5,652,555533,352
Events in quadrant B3,040,732638,761
Events in quadrant C2,987,402601,947
Events in quadrant D3,201,189598,912

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206411
B0126701
C0125531
D0134801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6049124620.598446%
B6050580.958678%
C6049560.925773%
D6049771.272938%

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 7164 6050 765 765 10.68% 12.64%
B 7165 6051 2 2 0.03% 0.03%
C 7164 6050 0 0 0.00% 0.00%
D 7164 6050 40 40 0.56% 0.66%

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 14 238 2988117 21851.58 681 672 136.7
A 14 237 26517 189.04 681 672 136.7
A 12 16 6891 45.49 681 672 136.7
B 12 111 17469 114.1 765 748 146.6
B 0 214 17110 111.65 765 748 146.6
B 3 64 15380 99.84 765 748 146.6
C 14 238 116268 682.18 728 736 169.4
C 3 233 25892 148.54 728 736 169.4
C 13 61 4942 24.84 728 736 169.4
D 1 52 278885 1564.87 741 723 177.8
D 14 34 39969 220.79 741 723 177.8
D 11 176 37614 207.54 741 723 177.8

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