ASTROSAT CZTI

Data Quality Report

Orbit 20190908_A05_108T01_9000003146_level2

Creation date: 2019-09-11T11:59:37.017697
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/AS1A05_108T01_9000003146cztM0_level2_bc.evt modeM0/AS1A05_108T01_9000003146cztM0_level2_quad_clean.evt
Size (bytes)2,477,246,400929,232,000
Size2.3 GB 886.2 MB
Events in quadrant A16,760,8015,938,209
Events in quadrant B15,881,7146,062,585
Events in quadrant C14,234,6615,763,741
Events in quadrant D23,405,8445,611,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01499150
B01495130
C01455800
D01769460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014200
B014200
C014200
D014200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A695608501.221967%
B695609841.414606%
C6956010731.542553%
D6956017592.528752%

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 80429 69555 7 7 0.01% 0.01%
B 80429 69553 52 52 0.06% 0.07%
C 80429 69553 10 10 0.01% 0.01%
D 80429 69553 99 99 0.12% 0.14%

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 5 168 1529877 1880.68 3765 3698 811.5
A 15 236 386198 471.35 3765 3698 811.5
A 13 254 93998 111.28 3765 3698 811.5
B 3 64 524654 732.2 3813 3724 711.5
B 0 230 279817 388.07 3813 3724 711.5
B 0 197 126445 172.49 3813 3724 711.5
C 10 23 90168 101.53 3643 3628 852.3
C 7 220 46738 50.58 3643 3628 852.3
C 7 247 44903 48.43 3643 3628 852.3
D 13 174 4451296 5269.93 3684 3568 844.0
D 1 52 2886284 3415.61 3684 3568 844.0
D 12 235 496423 583.96 3684 3568 844.0

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