ASTROSAT CZTI

Data Quality Report

Orbit 46768

Creation date: 2024-06-27T23:27:24.703629
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_053T01_9000006266_46768cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46768cztM0_level2_quad_clean.evt
Size (bytes)561,870,720123,500,160
Size535.8 MB 117.8 MB
Events in quadrant A7,468,533804,515
Events in quadrant B3,762,650852,145
Events in quadrant C3,662,012816,582
Events in quadrant D5,295,103719,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272767
B0168162
C0167162
D0214365

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78645076.447101%
B78652222.822632%
C78651061.347743%
D78635046.409767%

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 7900 7865 92 92 1.16% 1.17%
B 7900 7866 13 13 0.16% 0.17%
C 7900 7866 11 11 0.14% 0.14%
D 7900 7865 380 380 4.81% 4.83%

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 10 83 3537586 19993.45 855 835 176.9
A 9 191 300459 1693.79 855 835 176.9
A 13 248 286229 1613.35 855 835 176.9
B 4 171 115909 670.95 871 843 171.5
B 3 112 87746 506.73 871 843 171.5
B 0 245 46275 264.91 871 843 171.5
C 14 220 146247 718.37 861 859 202.4
C 14 254 87307 427.14 861 859 202.4
C 3 233 39440 190.63 861 859 202.4
D 13 249 776583 3747.34 835 808 207.0
D 1 52 716575 3457.48 835 808 207.0
D 11 224 232566 1119.49 835 808 207.0

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