ASTROSAT CZTI

Data Quality Report

Orbit 36168

Creation date: 2022-06-07T13:35:27.670147
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/AS1A11_059T08_9000005160_36168cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36168cztM0_level2_quad_clean.evt
Size (bytes)1,188,051,840196,545,600
Size1.1 GB 187.4 MB
Events in quadrant A7,350,9301,233,383
Events in quadrant B8,637,7701,277,711
Events in quadrant C9,135,6621,210,972
Events in quadrant D9,806,2921,158,631

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319075
B0354734
C0363114
D0396034

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15542240.154420%
B155422351.512032%
C155423322.136147%
D155425503.538798%

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 21125 15546 0 0 0.00% 0.00%
B 21125 15546 135 135 0.64% 0.87%
C 21125 15546 257 257 1.22% 1.65%
D 21125 15546 453 453 2.14% 2.91%

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 10 83 427466 1190.46 1778 1742 357.6
A 13 254 25184 65.55 1778 1742 357.6
A 3 137 19178 48.76 1778 1742 357.6
B 5 172 730881 2128.29 1773 1725 342.6
B 15 32 257309 746.01 1773 1725 342.6
B 0 190 213349 617.7 1773 1725 342.6
C 15 208 828701 2059.67 1731 1743 401.5
C 15 214 693914 1723.96 1731 1743 401.5
C 0 10 387646 961.15 1731 1743 401.5
D 2 249 1000148 2397.16 1717 1673 416.5
D 1 52 407788 975.01 1717 1673 416.5
D 12 17 404983 968.28 1717 1673 416.5

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