ASTROSAT CZTI

Data Quality Report

Orbit 20191115_T03_147T01_9000003306_level2

Creation date: 2019-11-19T13:24:55.324163
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_147T01_9000003306cztM0_level2_bc.evt modeM0/AS1T03_147T01_9000003306cztM0_level2_quad_clean.evt
Size (bytes)2,217,202,560990,538,560
Size2.1 GB 944.7 MB
Events in quadrant A14,489,5646,373,932
Events in quadrant B14,972,2576,534,482
Events in quadrant C14,360,7606,204,854
Events in quadrant D18,522,6086,062,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014380
B014380
C014380
D014380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01453410
B01467860
C01465030
D01564630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A704057881.119239%
B704059771.387686%
C7040511511.634827%
D7040510951.555287%

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 81456 70406 0 0 0.00% 0.00%
B 81456 70401 6 6 0.01% 0.01%
C 81456 70401 2 2 0.00% 0.00%
D 81456 70402 283 283 0.35% 0.40%

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 87680 103.91 3746 3678 808.4
A 3 1 55927 64.63 3746 3678 808.4
A 0 226 23567 24.6 3746 3678 808.4
B 4 171 59351 77.89 3828 3737 714.0
B 4 173 54687 71.36 3828 3737 714.0
B 4 52 51826 67.35 3828 3737 714.0
C 10 22 103903 116.0 3673 3651 864.2
C 0 10 66450 72.66 3673 3651 864.2
C 10 1 38709 40.56 3673 3651 864.2
D 1 52 2466767 2858.34 3720 3593 861.7
D 12 227 1287013 1489.32 3720 3593 861.7
D 2 234 275854 315.94 3720 3593 861.7

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