ASTROSAT CZTI

Data Quality Report

Orbit 20160427_G05_167T02_9000000432_level2

Creation date: 2017-10-31T11:16:08.535872
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/AS1G05_167T02_9000000432cztM0_level2.evt modeM0/AS1G05_167T02_9000000432cztM0_level2_quad_clean.evt
Size (bytes)1,840,515,840302,034,240
Size1.7 GB 288.0 MB
Events in quadrant A11,391,1681,903,487
Events in quadrant B12,467,8261,899,696
Events in quadrant C14,848,7811,873,459
Events in quadrant D15,377,7851,784,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510980
B0535830
C0608270
D0630110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245151880.766877%
B245153861.574546%
C245158493.463186%
D245158523.475423%

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 28285 24519 17 17 0.06% 0.07%
B 28285 24520 151 151 0.53% 0.62%
C 28285 24519 608 608 2.15% 2.48%
D 28285 24520 658 658 2.33% 2.68%

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 14 249 271040 461.89 2827 2766 580.8
A 3 1 120350 202.44 2827 2766 580.8
A 12 247 58135 95.33 2827 2766 580.8
B 4 81 496784 895.28 2860 2797 551.8
B 5 70 476571 858.65 2860 2797 551.8
B 3 0 170147 303.3 2860 2797 551.8
C 14 223 3215684 5093.0 2711 2728 630.9
C 1 192 628345 991.69 2711 2728 630.9
C 6 80 118458 183.45 2711 2728 630.9
D 12 233 2530782 3885.76 2692 2611 650.6
D 2 136 599321 917.13 2692 2611 650.6
D 5 233 542111 829.2 2692 2611 650.6

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