ASTROSAT CZTI

Data Quality Report

Orbit 20210128_A10_123T06_9000004138_level2

Creation date: 2021-02-01T10:31:51.096669
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/AS1A10_123T06_9000004138cztM0_level2_bc.evt modeM0/AS1A10_123T06_9000004138cztM0_level2_quad_clean.evt
Size (bytes)3,244,461,120689,316,480
Size3.0 GB 657.4 MB
Events in quadrant A12,886,7564,483,661
Events in quadrant B12,322,3434,557,082
Events in quadrant C14,305,8894,373,739
Events in quadrant D55,195,6433,878,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01137130
B01151540
C01198760
D02457550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010600
B010600
C010620
D010580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0810
D0810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A522119501.819540%
B5222816793.214751%
C5220815082.888446%
D521951406726.950857%

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 63966 52258 33 33 0.05% 0.06%
B 63966 52272 28 28 0.04% 0.05%
C 63966 52255 9 9 0.01% 0.02%
D 63966 52230 8503 8503 13.29% 16.28%

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 14 235 1636876 2683.34 2813 2763 609.0
A 1 113 266393 432.9 2813 2763 609.0
A 13 254 90622 144.27 2813 2763 609.0
B 10 245 764921 1440.46 2811 2749 529.1
B 5 255 344687 646.24 2811 2749 529.1
B 15 32 124952 230.96 2811 2749 529.1
C 3 233 3548939 5573.37 2693 2677 636.3
C 4 254 310802 484.26 2693 2677 636.3
C 14 254 42067 61.91 2693 2677 636.3
D 8 195 40211758 67201.96 2547 2458 598.3
D 1 52 3119826 5210.07 2547 2458 598.3
D 7 80 1500278 2503.31 2547 2458 598.3

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