ASTROSAT CZTI

Data Quality Report

Orbit 11944

Creation date: 2024-06-27T16:20:23.715727
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/AS1A04_124T01_9000001766_11944cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11944cztM0_level2_quad_clean.evt
Size (bytes)552,683,520137,727,360
Size527.1 MB 131.3 MB
Events in quadrant A3,597,469927,001
Events in quadrant B4,982,272926,311
Events in quadrant C3,292,418919,967
Events in quadrant D4,355,629874,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160323
B0200822
C0154322
D0185372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7530590.783533%
B75304225.604250%
C7530180.239044%
D7530750.996016%

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 9236 7533 2 2 0.02% 0.03%
B 9236 7532 219 219 2.37% 2.91%
C 9236 7533 1 1 0.01% 0.01%
D 9236 7532 47 47 0.51% 0.62%

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 8 15 67467 385.38 858 838 172.9
A 1 162 56146 319.9 858 838 172.9
A 11 29 38103 215.54 858 838 172.9
B 4 239 1081684 6694.31 856 834 161.5
B 3 64 282645 1745.41 856 834 161.5
B 15 204 162647 1002.2 856 834 161.5
C 0 10 15895 78.21 839 841 192.5
C 13 61 6212 27.9 839 841 192.5
C 0 207 4704 20.07 839 841 192.5
D 1 52 518787 2629.8 826 803 197.0
D 8 195 269761 1365.5 826 803 197.0
D 13 122 181874 919.3 826 803 197.0

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