ASTROSAT CZTI

Data Quality Report

Orbit 21532

Creation date: 2024-06-27T18:29:03.262924
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/AS1A05_144T02_9000003176_21532cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21532cztM0_level2_quad_clean.evt
Size (bytes)1,543,242,240254,373,120
Size1.4 GB 242.6 MB
Events in quadrant A8,394,8071,634,391
Events in quadrant B8,815,9961,653,259
Events in quadrant C10,142,1241,621,189
Events in quadrant D18,143,7901,528,033

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373535
B0383524
C0421534
D0666164

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18380930.505985%
B183811240.674610%
C183815843.177194%
D18381246413.405147%

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 20425 18383 0 0 0.00% 0.00%
B 20426 18384 6 6 0.03% 0.03%
C 20426 18384 240 240 1.17% 1.31%
D 20426 18384 1619 1619 7.93% 8.81%

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 13 254 29934 63.91 2174 2128 435.1
A 0 226 18772 38.26 2174 2128 435.1
A 3 137 18426 37.46 2174 2128 435.1
B 0 230 138872 335.91 2168 2110 407.1
B 0 190 78158 186.78 2168 2110 407.1
B 12 111 50367 118.52 2168 2110 407.1
C 3 233 1582464 3260.23 2086 2096 484.7
C 14 238 327352 670.99 2086 2096 484.7
C 10 91 96378 194.5 2086 2096 484.7
D 1 52 7195221 13620.42 1999 1960 528.1
D 7 38 2038403 3856.0 1999 1960 528.1
D 14 35 781111 1475.32 1999 1960 528.1

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