ASTROSAT CZTI

Data Quality Report

Orbit 29804

Creation date: 2024-06-27T20:07:54.267219
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/AS1T03_291T01_9000004278_29804cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29804cztM0_level2_quad_clean.evt
Size (bytes)772,937,28078,603,840
Size737.1 MB 75.0 MB
Events in quadrant A3,504,987531,609
Events in quadrant B10,101,935443,823
Events in quadrant C3,564,344492,085
Events in quadrant D5,819,423480,043

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143212
B0342204
C0144182
D0212692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6187891.438500%
B6187302348.860514%
C61871722.780023%
D618781113.108130%

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 7522 6188 0 0 0.00% 0.00%
B 7522 6188 2320 2320 30.84% 37.49%
C 7522 6188 7 7 0.09% 0.11%
D 7522 6188 771 771 10.25% 12.46%

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 13 254 14487 76.17 907 891 178.5
A 3 137 8054 40.13 907 891 178.5
A 0 226 7658 37.91 907 891 178.5
B 0 189 5228537 37872.39 757 743 138.0
B 6 159 1602056 11600.6 757 743 138.0
B 0 229 278310 2010.81 757 743 138.0
C 14 238 151945 797.84 839 845 189.4
C 10 22 105202 551.03 839 845 189.4
C 14 254 16822 84.36 839 845 189.4
D 7 238 2076610 11194.5 788 770 185.4
D 8 195 480904 2589.25 788 770 185.4
D 7 80 165858 890.28 788 770 185.4

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