ASTROSAT CZTI

Data Quality Report

Orbit 20161101_G06_028T01_9000000768_level2

Creation date: 2017-09-18T22:12:58.599716
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_028T01_9000000768cztM0_level2.evt modeM0/AS1G06_028T01_9000000768cztM0_level2_quad_clean.evt
Size (bytes)2,771,288,640440,444,160
Size2.6 GB 420.0 MB
Events in quadrant A17,236,7242,767,498
Events in quadrant B18,993,8372,779,954
Events in quadrant C16,626,1512,760,608
Events in quadrant D28,616,1652,531,347

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07500
B07460
C07480
D07480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760930
B0808650
C0743000
D01097330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363823380.929031%
B363854961.363199%
C364311350.370564%
D3632827757.638736%

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 44083 36714 146 146 0.33% 0.40%
B 44083 36728 188 188 0.43% 0.51%
C 44083 36780 1 1 0.00% 0.00%
D 44083 36721 2424 2424 5.50% 6.60%

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 15 234 378592 432.07 4295 4214 866.5
A 0 50 198353 224.06 4295 4214 866.5
A 7 16 104074 115.25 4295 4214 866.5
B 15 204 823151 1004.26 4336 4246 815.4
B 15 255 727484 886.94 4336 4246 815.4
B 0 214 222876 268.12 4336 4246 815.4
C 9 68 98272 97.39 4212 4255 965.4
C 14 67 67734 65.75 4212 4255 965.4
C 13 61 33437 30.23 4212 4255 965.4
D 2 63 5840435 5828.65 4098 3984 1001.3
D 1 20 5458235 5446.96 4098 3984 1001.3
D 8 195 847964 842.85 4098 3984 1001.3

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