ASTROSAT CZTI

Data Quality Report

Orbit 20151013_P01_123T01_9000000024_level2

Creation date: 2016-09-06T18:00:45.403404
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/AS1P01_123T01_9000000024cztM0_level2_bc.evt modeM0/AS1P01_123T01_9000000024cztM0_level2_quad_clean.evt
Size (bytes)2,534,302,080929,903,040
Size2.4 GB 886.8 MB
Events in quadrant A11,585,3716,001,504
Events in quadrant B15,835,9746,010,176
Events in quadrant C11,729,8436,113,270
Events in quadrant D33,252,6665,662,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02410
B02410
C02410
D02410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013040
B013040
C013040
D013040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02687020
B02812290
C02514420
D03174450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A638641190.186333%
B638644280.670174%
C63863280.043844%
D6386431084.866592%

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 87886 63864 9 9 0.01% 0.01%
B 87886 63865 168 168 0.19% 0.26%
C 87886 63865 9 9 0.01% 0.01%
D 87886 63837 797 797 0.91% 1.25%

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 5 244 229094 404.37 2662 2602 560.1
A 12 150 200528 353.37 2662 2602 560.1
A 15 250 157434 276.43 2662 2602 560.1
B 5 46 1588268 3228.91 2722 2633 491.1
B 7 220 1204548 2447.52 2722 2633 491.1
B 7 251 855781 1737.31 2722 2633 491.1
C 1 1 659440 1147.45 2684 2637 572.4
C 9 188 91081 154.51 2684 2637 572.4
C 9 54 49644 82.12 2684 2637 572.4
D 1 4 18301818 30859.66 2593 2509 593.0
D 2 85 738403 1241.0 2593 2509 593.0
D 10 154 510566 856.78 2593 2509 593.0

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