ASTROSAT CZTI

Data Quality Report

Orbit 20191109_A07_018T07_9000003294_level2

Creation date: 2019-11-19T14:28:45.285689
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_018T07_9000003294cztM0_level2_bc.evt modeM0/AS1A07_018T07_9000003294cztM0_level2_quad_clean.evt
Size (bytes)2,901,504,960964,814,400
Size2.7 GB 920.1 MB
Events in quadrant A15,884,6326,231,985
Events in quadrant B16,646,7056,321,507
Events in quadrant C17,259,2485,947,941
Events in quadrant D32,937,3765,546,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01573290
B01600330
C01641830
D02247470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015400
B015400
C015400
D015400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7544610581.402327%
B7544414051.862308%
C7544620172.673435%
D75447815010.802285%

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 98707 75448 0 0 0.00% 0.00%
B 98707 75448 14 14 0.01% 0.02%
C 98707 75450 350 350 0.35% 0.46%
D 98707 75442 1484 1484 1.50% 1.97%

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 101867 110.41 4115 4039 886.0
A 0 226 26296 25.12 4115 4039 886.0
A 12 194 25808 24.57 4115 4039 886.0
B 3 64 455023 586.12 4155 4052 769.4
B 4 171 136607 172.28 4155 4052 769.4
B 4 173 45588 53.98 4155 4052 769.4
C 10 22 2060134 2244.63 3924 3903 916.1
C 3 9 97476 102.15 3924 3903 916.1
C 13 61 22910 20.75 3924 3903 916.1
D 1 52 15093696 17253.03 3834 3702 874.6
D 12 235 1421210 1620.7 3834 3702 874.6
D 12 227 414896 470.14 3834 3702 874.6

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