ASTROSAT CZTI

Data Quality Report

Orbit 35719

Creation date: 2022-05-10T12:13:34.255617
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/AS1A09_142T05_9000005118_35719cztM0_level2.evt modeM0/AS1A09_142T05_9000005118_35719cztM0_level2_quad_clean.evt
Size (bytes)1,072,344,960172,667,520
Size1022.7 MB 164.7 MB
Events in quadrant A6,976,4031,071,468
Events in quadrant B7,798,3651,078,802
Events in quadrant C9,070,3941,049,288
Events in quadrant D7,633,4381,011,046

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299593
B0325553
C0359553
D0327723

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14755190.128770%
B147552091.416469%
C147553722.521179%
D147551541.043714%

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 18726 14758 1 1 0.01% 0.01%
B 18726 14758 164 164 0.88% 1.11%
C 18726 14758 344 344 1.84% 2.33%
D 18726 14758 129 129 0.69% 0.87%

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 10 83 303522 869.03 1712 1671 347.3
A 13 6 28463 77.13 1712 1671 347.3
A 13 254 19150 50.32 1712 1671 347.3
B 5 172 763514 2349.03 1689 1642 324.3
B 5 255 174237 532.15 1689 1642 324.3
B 4 206 124672 379.33 1689 1642 324.3
C 0 207 1024615 2665.15 1656 1667 383.8
C 0 10 784589 2039.79 1656 1667 383.8
C 15 214 608790 1581.77 1656 1667 383.8
D 13 249 622113 1518.89 1668 1621 408.5
D 2 249 138635 335.39 1668 1621 408.5
D 10 118 131013 316.74 1668 1621 408.5

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