ASTROSAT CZTI

Data Quality Report

Orbit 14619

Creation date: 2024-06-27T16:57:34.768243
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_016T01_9000002152_14619cztM0_level2.evt modeM0/AS1A04_016T01_9000002152_14619cztM0_level2_quad_clean.evt
Size (bytes)500,123,520109,653,120
Size477.0 MB 104.6 MB
Events in quadrant A3,395,218720,888
Events in quadrant B3,309,442740,983
Events in quadrant C3,941,760726,615
Events in quadrant D4,079,235699,485

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140263
B0137412
C0166282
D0163602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6206470.757332%
B6206681.095714%
C6206450.725105%
D62061522.449243%

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 7547 6208 1 1 0.01% 0.02%
B 7547 6208 1 1 0.01% 0.02%
C 7547 6208 1 1 0.01% 0.02%
D 7547 6208 121 121 1.60% 1.95%

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 1 162 97699 582.43 825 810 166.4
A 1 178 39859 234.74 825 810 166.4
A 1 161 35578 209.0 825 810 166.4
B 0 189 26952 168.32 829 809 155.3
B 0 214 19463 120.1 829 809 155.3
B 12 111 18115 111.42 829 809 155.3
C 3 233 735434 3891.92 821 828 188.8
C 13 61 5860 26.66 821 828 188.8
C 12 4 4399 18.92 821 828 188.8
D 12 110 544629 2840.13 812 796 191.5
D 10 199 306000 1593.91 812 796 191.5
D 15 145 48474 248.99 812 796 191.5

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