ASTROSAT CZTI

Data Quality Report

Orbit 20201102_A09_038T31_9000003960_level2

Creation date: 2021-01-07T15:41:00.464104
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/AS1A09_038T31_9000003960cztM0_level2_bc.evt modeM0/AS1A09_038T31_9000003960cztM0_level2_quad_clean.evt
Size (bytes)155,571,84078,649,920
Size148.4 MB 75.0 MB
Events in quadrant A839,968532,490
Events in quadrant B1,184,571531,115
Events in quadrant C936,453511,082
Events in quadrant D1,445,345500,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088360
B0101010
C091670
D0105390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4366250.572607%
B43661252.863033%
C4366300.687128%
D4366681.557490%

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 4981 4366 1 1 0.02% 0.02%
B 4981 4366 0 0 0.00% 0.00%
C 4981 4366 0 0 0.00% 0.00%
D 4980 4365 15 15 0.30% 0.34%

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 7971 154.9 214 210 50.1
A 8 192 7899 153.46 214 210 50.1
A 13 248 3775 71.15 214 210 50.1
B 4 52 250850 5666.07 212 207 44.2
B 10 245 70282 1584.12 212 207 44.2
B 15 32 15041 335.34 212 207 44.2
C 15 208 93011 1813.37 204 202 51.2
C 2 16 45293 881.02 204 202 51.2
C 10 22 6495 122.96 204 202 51.2
D 1 52 482269 9484.25 207 200 50.8
D 7 80 69684 1367.03 207 200 50.8
D 2 250 39080 764.93 207 200 50.8

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