ASTROSAT CZTI

Data Quality Report

Orbit 20160105_T01_023T01_9000000246_level2

Creation date: 2017-05-17T12:15:53.691974
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/AS1T01_023T01_9000000246cztM0_level2.evt modeM0/AS1T01_023T01_9000000246cztM0_level2_quad_clean.evt
Size (bytes)11,468,741,760798,229,440
Size10.7 GB 761.3 MB
Events in quadrant A87,422,1664,808,157
Events in quadrant B93,041,6694,923,600
Events in quadrant C84,022,0244,860,614
Events in quadrant D78,188,7414,729,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014400
B014400
C014400
D014400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0970

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03098630
B03264060
C02999370
D02828550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A707828251.165551%
B707825180.731824%
C707822780.392755%
D707824450.628691%

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 79957 70788 3940 3940 4.93% 5.57%
B 79957 70788 4820 4820 6.03% 6.81%
C 79957 70785 2519 2519 3.15% 3.56%
D 79957 70789 2398 2398 3.00% 3.39%

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 15 127 2059459 388.17 21721 21892 5249.2
A 4 32 1004153 187.13 21721 21892 5249.2
A 0 36 777033 143.86 21721 21892 5249.2
B 8 4 4834747 897.45 22723 22828 5361.8
B 12 52 633626 113.92 22723 22828 5361.8
B 5 249 434134 76.71 22723 22828 5361.8
C 15 241 2321587 399.28 20680 21423 5760.7
C 8 208 235814 37.22 20680 21423 5760.7
C 3 111 226790 35.65 20680 21423 5760.7
D 9 53 1249237 197.65 20053 20859 6215.0
D 13 53 855616 134.31 20053 20859 6215.0
D 7 207 493380 76.03 20053 20859 6215.0

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