ASTROSAT CZTI

Data Quality Report

Orbit 20161116_A02_199T01_9000000800_level2

Creation date: 2017-09-19T02:44:45.943969
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/AS1A02_199T01_9000000800cztM0_level2.evt modeM0/AS1A02_199T01_9000000800cztM0_level2_quad_clean.evt
Size (bytes)3,546,316,800772,133,760
Size3.3 GB 736.4 MB
Events in quadrant A24,281,4995,054,745
Events in quadrant B28,893,2975,057,067
Events in quadrant C23,351,5864,971,754
Events in quadrant D27,324,0174,697,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01093280
B01220680
C01075350
D01198460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010700
B010700
C010700
D010700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525684050.770431%
B5256912562.389241%
C525692310.439422%
D5257211342.157042%

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 61536 52598 91 91 0.15% 0.17%
B 61536 52597 621 621 1.01% 1.18%
C 61536 52599 3 3 0.00% 0.01%
D 61536 52598 725 725 1.18% 1.38%

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 831618 687.49 6007 5877 1201.1
A 0 254 106313 83.62 6007 5877 1201.1
A 15 236 102529 80.47 6007 5877 1201.1
B 3 64 3892052 3449.7 6032 5887 1126.5
B 0 219 686093 603.81 6032 5887 1126.5
B 0 214 305264 265.75 6032 5887 1126.5
C 1 16 259449 188.44 5892 5918 1345.5
C 13 61 47072 30.59 5892 5918 1345.5
C 9 16 38533 24.24 5892 5918 1345.5
D 13 169 3590877 2563.0 5810 5644 1398.8
D 2 33 530025 374.87 5810 5644 1398.8
D 5 97 435576 307.35 5810 5644 1398.8

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