ASTROSAT CZTI

Data Quality Report

Orbit 18184

Creation date: 2024-06-27T17:46:25.940591
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/AS1A05_160T02_9000002710_18184cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18184cztM0_level2_quad_clean.evt
Size (bytes)541,445,76082,264,320
Size516.4 MB 78.5 MB
Events in quadrant A3,599,271501,035
Events in quadrant B3,897,573502,008
Events in quadrant C4,089,592489,570
Events in quadrant D4,308,386482,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154521
B0163111
C0168881
D0177041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7410931.255061%
B74101972.658570%
C74103154.251012%
D74112593.494805%

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 7615 7412 6 6 0.08% 0.08%
B 7615 7412 36 36 0.47% 0.49%
C 7615 7412 69 69 0.91% 0.93%
D 7616 7413 122 122 1.60% 1.65%

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 4 2 35091 182.83 918 896 187.0
A 15 174 21942 112.53 918 896 187.0
A 15 192 10360 50.6 918 896 187.0
B 7 220 227924 1290.44 912 889 175.9
B 0 189 37170 206.22 912 889 175.9
B 0 229 21338 116.23 912 889 175.9
C 4 254 557919 2743.18 869 873 203.1
C 14 238 134057 655.87 869 873 203.1
C 13 61 6234 26.4 869 873 203.1
D 7 238 538047 2463.14 890 865 218.1
D 10 70 198466 906.06 890 865 218.1
D 1 52 48886 220.19 890 865 218.1

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