ASTROSAT CZTI

Data Quality Report

Orbit 11932

Creation date: 2024-06-27T16:20:15.937001
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_124T01_9000001766_11932cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11932cztM0_level2_quad_clean.evt
Size (bytes)506,957,760124,148,160
Size483.5 MB 118.4 MB
Events in quadrant A3,332,398835,190
Events in quadrant B4,109,902834,787
Events in quadrant C3,037,429819,326
Events in quadrant D4,395,264780,204

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146642
B0169081
C0143051
D0180041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70371492.117380%
B70373344.746341%
C7037480.682109%
D70371972.799488%

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 7278 7038 10 10 0.14% 0.14%
B 7278 7038 186 186 2.56% 2.64%
C 7278 7038 1 1 0.01% 0.01%
D 7278 7038 96 96 1.32% 1.36%

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 70743 423.07 803 785 165.4
A 1 178 33098 195.41 803 785 165.4
A 1 161 29113 171.31 803 785 165.4
B 4 239 681927 4481.23 793 773 152.0
B 15 204 216274 1417.75 793 773 152.0
B 0 231 48811 316.03 793 773 152.0
C 8 128 8014 40.7 773 775 177.9
C 14 234 6176 30.36 773 775 177.9
C 13 61 5742 27.92 773 775 177.9
D 5 222 669960 3607.96 765 738 185.5
D 1 52 499595 2689.48 765 738 185.5
D 8 195 124580 667.67 765 738 185.5

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