ASTROSAT CZTI

Data Quality Report

Orbit 30647

Creation date: 2024-06-27T20:18:08.219341
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/AS1A10_103T02_9000004416_30647cztM0_level2.evt modeM0/AS1A10_103T02_9000004416_30647cztM0_level2_quad_clean.evt
Size (bytes)843,883,200101,989,440
Size804.8 MB 97.3 MB
Events in quadrant A4,282,539672,992
Events in quadrant B5,885,055664,775
Events in quadrant C4,269,106639,959
Events in quadrant D10,616,235589,246

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174872
B0229012
C0173762
D0367852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74862793.726957%
B74862052.738445%
C74861732.310980%
D7486105414.079615%

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 8051 7487 112 112 1.39% 1.50%
B 8051 7487 30 30 0.37% 0.40%
C 8051 7487 18 18 0.22% 0.24%
D 8051 7487 904 904 11.23% 12.07%

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 0 13 700812 3810.17 922 906 183.7
A 8 192 17943 92.75 922 906 183.7
A 13 254 14547 74.26 922 906 183.7
B 6 159 2110842 12174.57 919 897 173.3
B 5 172 93239 532.82 919 897 173.3
B 12 111 21114 116.65 919 897 173.3
C 3 233 297289 1426.45 889 894 207.8
C 10 22 295703 1418.82 889 894 207.8
C 14 238 142427 681.15 889 894 207.8
D 8 195 6914167 33522.99 873 851 206.2
D 12 227 198553 958.67 873 851 206.2
D 13 249 80732 387.35 873 851 206.2

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