ASTROSAT CZTI

Data Quality Report

Orbit 44798

Creation date: 2024-06-27T23:06:42.749717
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/AS1A13_004T13_9000006022_44798cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44798cztM0_level2_quad_clean.evt
Size (bytes)729,610,560115,856,640
Size695.8 MB 110.5 MB
Events in quadrant A11,642,526594,711
Events in quadrant B5,278,179823,774
Events in quadrant C3,500,712822,112
Events in quadrant D5,975,984718,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401810
B0210280
C0163140
D0233020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7878261633.206398%
B78783955.013963%
C7878240.304646%
D78785196.587966%

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 7878 7878 2337 2337 29.66% 29.66%
B 7878 7878 216 216 2.74% 2.74%
C 7878 7878 11 11 0.14% 0.14%
D 7878 7878 459 459 5.83% 5.83%

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 15 223 7004050 45506.81 734 717 153.9
A 10 83 1778769 11553.57 734 717 153.9
A 7 3 12376 75.76 734 717 153.9
B 0 189 1543802 8990.17 857 827 171.6
B 5 255 162200 940.24 857 827 171.6
B 0 219 60340 346.75 857 827 171.6
C 14 254 103168 505.08 859 865 202.5
C 1 3 30532 146.47 859 865 202.5
C 2 14 14366 66.66 859 865 202.5
D 5 235 671050 3172.44 832 801 211.3
D 1 52 639906 3025.02 832 801 211.3
D 2 249 261344 1233.21 832 801 211.3

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