ASTROSAT CZTI

Data Quality Report

Orbit 20160919_G05_212T01_9000000672_level2

Creation date: 2017-09-21T16:59:11.361884
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_212T01_9000000672cztM0_level2.evt modeM0/AS1G05_212T01_9000000672cztM0_level2_quad_clean.evt
Size (bytes)2,216,191,680480,695,040
Size2.1 GB 458.4 MB
Events in quadrant A14,041,8793,202,646
Events in quadrant B13,244,7783,321,995
Events in quadrant C12,238,3293,319,326
Events in quadrant D25,773,4122,861,133

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0607510
B0577200
C0549790
D0955090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A269766172.287218%
B269752220.822984%
C26976870.322509%
D26976416915.454478%

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 32716 26982 533 533 1.63% 1.98%
B 32716 26982 43 43 0.13% 0.16%
C 32716 26982 0 0 0.00% 0.00%
D 32716 26982 3423 3423 10.46% 12.69%

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 50 1709499 2802.31 3043 2982 609.0
A 13 251 606591 991.2 3043 2982 609.0
A 12 194 30507 45.2 3043 2982 609.0
B 4 48 672131 1165.66 3126 3052 574.0
B 10 16 203986 350.06 3126 3052 574.0
B 15 204 107829 182.54 3126 3052 574.0
C 1 16 305527 437.77 3051 3062 690.9
C 13 61 24637 31.23 3051 3062 690.9
C 14 67 14988 17.26 3051 3062 690.9
D 11 145 11735397 17425.78 2800 2723 673.3
D 2 33 1356583 2010.8 2800 2723 673.3
D 2 136 593846 877.96 2800 2723 673.3

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