ASTROSAT CZTI

Data Quality Report

Orbit 20170328_G06_033T01_9000001116_level2

Creation date: 2017-09-23T13:22:10.653058
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/AS1G06_033T01_9000001116cztM0_level2.evt modeM0/AS1G06_033T01_9000001116cztM0_level2_quad_clean.evt
Size (bytes)5,556,885,120998,193,600
Size5.2 GB 952.0 MB
Events in quadrant A40,789,9116,181,380
Events in quadrant B40,463,2386,258,076
Events in quadrant C38,018,8506,308,420
Events in quadrant D43,613,3255,992,635

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01732120
B01717800
C01658050
D01836660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016280
B016280
C016280
D016280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8014910341.290097%
B8014912011.498459%
C801496050.754844%
D8014913581.694344%

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 93049 80159 12 12 0.01% 0.01%
B 93049 80159 67 67 0.07% 0.08%
C 93049 80158 17 17 0.02% 0.02%
D 93049 80161 634 634 0.68% 0.79%

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 8 15 2399577 1193.27 9886 9695 2002.8
A 15 79 241588 115.78 9886 9695 2002.8
A 0 226 93026 41.61 9886 9695 2002.8
B 0 214 679812 357.81 9938 9738 1872.7
B 10 16 414956 216.38 9938 9738 1872.7
B 11 51 300023 155.01 9938 9738 1872.7
C 12 4 131145 54.05 9691 9754 2246.1
C 1 16 96190 38.48 9691 9754 2246.1
C 13 61 74323 28.75 9691 9754 2246.1
D 1 52 3241807 1297.69 9603 9393 2490.9
D 5 233 1393673 555.73 9603 9393 2490.9
D 2 152 990391 393.83 9603 9393 2490.9

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