ASTROSAT CZTI

Data Quality Report

Orbit 20200114_A08_009T01_9000003434_level2

Creation date: 2020-01-16T16:57:29.342557
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/AS1A08_009T01_9000003434cztM0_level2_bc.evt modeM0/AS1A08_009T01_9000003434cztM0_level2_quad_clean.evt
Size (bytes)2,650,553,2801,048,118,400
Size2.5 GB 999.6 MB
Events in quadrant A15,135,5356,878,049
Events in quadrant B14,887,0696,987,778
Events in quadrant C18,317,3116,704,255
Events in quadrant D27,275,5596,490,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01441670
B01439320
C01574990
D01873140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01170
C01170
D01170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013960
B013960
C013980
D013960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A683537171.048966%
B683528501.243563%
C6833424213.542892%
D6835334905.105848%

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 90853 68360 10 10 0.01% 0.01%
B 90853 68363 7 7 0.01% 0.01%
C 90853 68350 137 137 0.15% 0.20%
D 90853 68357 642 642 0.71% 0.94%

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 13 252 698674 867.7 3703 3636 801.0
A 6 16 144606 175.99 3703 3636 801.0
A 13 254 100545 120.98 3703 3636 801.0
B 0 190 239693 337.63 3739 3653 699.1
B 0 229 84970 116.31 3739 3653 699.1
B 5 172 71534 97.1 3739 3653 699.1
C 3 233 1671158 1979.42 3563 3550 842.5
C 2 16 1416504 1677.15 3563 3550 842.5
C 0 10 697677 823.91 3563 3550 842.5
D 1 52 4773094 5674.63 3599 3480 840.5
D 7 238 2287789 2717.75 3599 3480 840.5
D 2 152 1646754 1955.08 3599 3480 840.5

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