ASTROSAT CZTI

Data Quality Report

Orbit 38037

Creation date: 2024-06-27T21:47:36.974227
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/AS1A11_024T01_9000005358_38037cztM0_level2.fits modeM0/AS1A11_024T01_9000005358_38037cztM0_level2_quad_clean.evt
Size (bytes)347,616,00094,127,040
Size331.5 MB 89.8 MB
Events in quadrant A2,895,073641,416
Events in quadrant B3,404,388635,637
Events in quadrant C2,875,821626,733
Events in quadrant D3,266,311563,751

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119023
B0135812
C0118122
D0132952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5470130.237660%
B54702664.862888%
C5470270.493601%
D54701622.961609%

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 7113 5471 7 7 0.10% 0.13%
B 7113 5471 171 171 2.40% 3.13%
C 7113 5471 19 19 0.27% 0.35%
D 7113 5471 147 147 2.07% 2.69%

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 375131 2917.35 634 621 128.4
A 12 16 26637 202.66 634 621 128.4
A 12 189 12490 92.46 634 621 128.4
B 5 172 269443 2249.28 622 607 119.5
B 4 171 224463 1872.95 622 607 119.5
B 5 255 194040 1618.41 622 607 119.5
C 15 214 233153 1593.28 620 626 145.9
C 1 23 180455 1232.19 620 626 145.9
C 0 10 18224 120.58 620 626 145.9
D 2 250 329878 2196.13 609 592 149.9
D 12 227 183092 1217.16 609 592 149.9
D 7 223 114874 762.19 609 592 149.9

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