ASTROSAT CZTI

Data Quality Report

Orbit 20161018_A02_150T01_9000000738_level2

Creation date: 2025-11-07T02:01:51.743896
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/AS1A02_150T01_9000000738cztM0_level2.fits modeM0/AS1A02_150T01_9000000738cztM0_level2_quad_clean.evt
Size (bytes)509,060,160485,395,200
Size485.5 MB 462.9 MB
Events in quadrant A3,081,8802,844,734
Events in quadrant B2,992,5722,873,846
Events in quadrant C3,046,4482,775,026
Events in quadrant D2,620,1962,530,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01098140
B01180070
C01096720
D01215020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010900
B010900
C010900
D010900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535724470.834391%
B535935931.106488%
C535713860.720539%
D5355910832.022069%

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 63937 53661 0 0 0.00% 0.00%
B 63937 53658 0 0 0.00% 0.00%
C 63937 53659 0 0 0.00% 0.00%
D 63937 53643 0 0 0.00% 0.00%

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 29 2941 10.82 800 748 202.6
A 7 110 2654 9.41 800 748 202.6
A 0 30 2351 7.91 800 748 202.6
B 2 9 2593 11.52 788 749 160.1
B 5 128 2063 8.21 788 749 160.1
B 14 254 2047 8.11 788 749 160.1
C 1 80 2193 6.77 804 745 213.9
C 12 241 2126 6.46 804 745 213.9
C 1 81 2114 6.4 804 745 213.9
D 11 82 2067 6.94 747 679 200.1
D 6 231 2029 6.75 747 679 200.1
D 3 14 2010 6.65 747 679 200.1

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