ASTROSAT CZTI

Data Quality Report

Orbit 20151024_P01_161T05_9000000062_level2

Creation date: 2016-09-06T17:59:53.836458
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/AS1P01_161T05_9000000062cztM0_level2_bc.evt modeM0/AS1P01_161T05_9000000062cztM0_level2_quad_clean.evt
Size (bytes)306,192,960111,006,720
Size292.0 MB 105.9 MB
Events in quadrant A1,857,939705,665
Events in quadrant B1,870,275713,005
Events in quadrant C1,822,226692,681
Events in quadrant D3,139,592663,608

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376300
B0367870
C0345820
D0389260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A845760.070947%
B845760.070947%
C8457350.413858%
D84572312.731465%

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 12792 8457 0 0 0.00% 0.00%
B 12792 8457 0 0 0.00% 0.00%
C 12792 8457 5 5 0.04% 0.06%
D 12792 8454 24 24 0.19% 0.28%

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 0 238 222228 2729.7 389 381 81.3
A 12 243 39694 483.72 389 381 81.3
A 13 17 25877 313.71 389 381 81.3
B 4 82 46021 643.61 399 388 70.9
B 7 221 36078 503.38 399 388 70.9
B 12 52 28619 398.17 399 388 70.9
C 3 159 142738 1746.19 379 373 81.5
C 2 53 74190 905.41 379 373 81.5
C 9 170 73538 897.41 379 373 81.5
D 13 7 667397 8028.23 374 365 83.1
D 1 5 194367 2334.96 374 365 83.1
D 1 13 88044 1055.28 374 365 83.1

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
Veto Counter