ASTROSAT CZTI

Data Quality Report

Orbit 25061

Creation date: 2024-06-27T19:13:22.668150
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/AS1T03_206T01_9000003672_25061cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25061cztM0_level2_quad_clean.evt
Size (bytes)603,031,68086,143,680
Size575.1 MB 82.2 MB
Events in quadrant A3,691,891535,381
Events in quadrant B3,839,324544,616
Events in quadrant C3,783,394514,823
Events in quadrant D6,425,519477,255

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159142
B0161692
C0159852
D0246592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77112152.788225%
B77112583.345870%
C77112593.358838%
D77116268.118273%

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 7911 7712 0 0 0.00% 0.00%
B 7911 7711 5 5 0.06% 0.06%
C 7911 7712 0 0 0.00% 0.00%
D 7911 7711 356 356 4.50% 4.62%

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 13 254 13054 62.31 957 936 194.5
A 3 137 9116 42.06 957 936 194.5
A 0 226 8232 37.52 957 936 194.5
B 10 249 39602 209.26 954 928 184.8
B 12 111 23041 119.65 954 928 184.8
B 5 172 21802 112.95 954 928 184.8
C 14 238 145236 671.13 913 918 215.0
C 7 247 33974 153.72 913 918 215.0
C 3 233 24641 110.32 913 918 215.0
D 1 52 1363145 6201.78 902 872 219.7
D 8 195 858046 3902.31 902 872 219.7
D 7 238 506944 2303.9 902 872 219.7

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