ASTROSAT CZTI

Data Quality Report

Orbit 31075

Creation date: 2024-06-27T20:23:03.893001
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_109T01_9000004492_31075cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31075cztM0_level2_quad_clean.evt
Size (bytes)580,763,52079,620,480
Size553.9 MB 75.9 MB
Events in quadrant A3,600,225500,026
Events in quadrant B5,575,566494,288
Events in quadrant C3,875,300478,734
Events in quadrant D4,086,296473,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148072
B0211532
C0156642
D0166632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66641111.665666%
B66652163.240810%
C66652593.885971%
D66651021.530383%

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 8744 6666 0 0 0.00% 0.00%
B 8745 6667 1 1 0.01% 0.01%
C 8745 6667 26 26 0.30% 0.39%
D 8745 6667 20 20 0.23% 0.30%

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 13 170 86573 474.07 910 893 180.7
A 13 254 11903 60.92 910 893 180.7
A 3 137 8867 44.12 910 893 180.7
B 6 159 1771373 10441.76 889 868 169.6
B 0 190 199191 1169.63 889 868 169.6
B 0 183 73840 430.36 889 868 169.6
C 0 10 269010 1334.45 861 868 200.9
C 14 238 140232 693.56 861 868 200.9
C 10 22 56670 277.71 861 868 200.9
D 8 195 640252 3101.43 878 857 206.2
D 2 250 56140 268.15 878 857 206.2
D 2 234 25496 119.51 878 857 206.2

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