ASTROSAT CZTI

Data Quality Report

Orbit 15504

Creation date: 2024-06-27T17:09:34.368426
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/AS1T02_085T01_9000002296_15504cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15504cztM0_level2_quad_clean.evt
Size (bytes)506,272,32079,750,080
Size482.8 MB 76.1 MB
Events in quadrant A3,348,867497,488
Events in quadrant B3,548,633501,996
Events in quadrant C3,632,119479,722
Events in quadrant D4,349,480470,019

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140802
B0145191
C0148291
D0171981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66771181.767261%
B66771211.812191%
C66771241.857121%
D66772834.238430%

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 7653 6678 7 7 0.09% 0.10%
B 7653 6679 5 5 0.07% 0.07%
C 7653 6678 0 0 0.00% 0.00%
D 7653 6678 197 197 2.57% 2.95%

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 45954 270.35 844 826 166.9
A 15 69 27204 158.02 844 826 166.9
A 9 143 11953 66.66 844 826 166.9
B 4 142 75610 474.05 837 817 157.8
B 4 216 45245 281.59 837 817 157.8
B 0 189 34842 215.66 837 817 157.8
C 3 233 370788 2011.06 801 807 184.0
C 14 238 124707 673.47 801 807 184.0
C 10 22 7446 36.09 801 807 184.0
D 1 52 884671 4467.64 815 790 197.8
D 5 222 229478 1155.92 815 790 197.8
D 10 70 57793 288.12 815 790 197.8

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