ASTROSAT CZTI

Data Quality Report

Orbit 20190104_T03_053T01_9000002616_level2

Creation date: 2019-01-05T09:54:01.039765
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/AS1T03_053T01_9000002616cztM0_level2_bc.evt modeM0/AS1T03_053T01_9000002616cztM0_level2_quad_clean.evt
Size (bytes)214,577,280107,190,720
Size204.6 MB 102.2 MB
Events in quadrant A1,372,038699,824
Events in quadrant B1,605,029700,863
Events in quadrant C1,490,786677,450
Events in quadrant D1,533,874669,108

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145610
B0154030
C0150100
D0150640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7168781.088170%
B7168931.297433%
C71681201.674107%
D7168971.353237%

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 7757 7167 0 0 0.00% 0.00%
B 7758 7168 0 0 0.00% 0.00%
C 7758 7167 0 0 0.00% 0.00%
D 7758 7167 0 0 0.00% 0.00%

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 15 174 5640 66.19 354 345 80.0
A 14 237 4174 47.86 354 345 80.0
A 3 1 3968 45.29 354 345 80.0
B 10 245 75076 1055.47 354 344 70.8
B 7 220 65149 915.26 354 344 70.8
B 0 219 16748 231.68 354 344 70.8
C 3 233 145611 1739.44 339 335 83.5
C 5 218 34612 410.41 339 335 83.5
C 1 16 2637 27.56 339 335 83.5
D 7 238 108226 1295.08 347 333 83.3
D 2 234 31540 374.59 347 333 83.3
D 10 70 28001 332.11 347 333 83.3

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