ASTROSAT CZTI

Data Quality Report

Orbit 33919

Creation date: 2024-06-27T20:54:11.076120
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/AS1T04_091T01_9000004842_33919cztM0_level2.evt modeM0/AS1T04_091T01_9000004842_33919cztM0_level2_quad_clean.evt
Size (bytes)535,354,56066,176,640
Size510.6 MB 63.1 MB
Events in quadrant A2,992,214410,449
Events in quadrant B3,682,618406,325
Events in quadrant C3,367,658412,872
Events in quadrant D5,798,543389,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123033
B0143852
C0133802
D0210882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5499230.418258%
B54993416.201127%
C54991462.655028%
D54994728.583379%

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 7140 5500 8 8 0.11% 0.15%
B 7140 5500 226 226 3.17% 4.11%
C 7140 5500 107 107 1.50% 1.95%
D 7140 5500 393 393 5.50% 7.15%

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 15 169 445604 3402.37 646 633 130.8
A 7 16 20939 155.27 646 633 130.8
A 10 83 13424 97.8 646 633 130.8
B 5 172 908269 7553.27 627 609 120.2
B 0 229 83989 693.86 627 609 120.2
B 4 251 43580 357.59 627 609 120.2
C 0 207 301746 2096.56 624 628 143.6
C 0 10 279128 1939.08 624 628 143.6
C 15 214 237849 1651.67 624 628 143.6
D 8 195 1456487 9520.26 616 597 152.9
D 1 52 536438 3503.93 616 597 152.9
D 1 47 514265 3358.94 616 597 152.9

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