ASTROSAT CZTI

Data Quality Report

Orbit 20160302_T01_056T01_9000000356_level2

Creation date: 2018-05-17T04:03:39.584302
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/AS1T01_056T01_9000000356cztM0_level2.evt modeM0/AS1T01_056T01_9000000356cztM0_level2_quad_clean.evt
Size (bytes)10,302,845,7601,612,825,920
Size9.6 GB 1.5 GB
Events in quadrant A64,322,7439,994,564
Events in quadrant B95,854,9839,949,149
Events in quadrant C76,941,3439,921,040
Events in quadrant D65,702,8329,627,282

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027740
B027740
C027740
D027740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02848350
B03775310
C03202180
D02940760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13659619901.456851%
B13659658904.311986%
C13659633332.440042%
D13659616611.215995%

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 155172 136615 217 217 0.14% 0.16%
B 155172 136616 1988 1988 1.28% 1.46%
C 155171 136615 1784 1784 1.15% 1.31%
D 155172 136617 445 445 0.29% 0.33%

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 0 149 1168359 354.08 16164 15817 3255.0
A 8 192 418975 123.86 16164 15817 3255.0
A 0 226 290971 84.53 16164 15817 3255.0
B 0 85 24365721 7969.73 16217 15812 3055.3
B 4 48 5316673 1734.97 16217 15812 3055.3
B 14 167 1363721 441.17 16217 15812 3055.3
C 5 234 10833708 2985.74 15641 15713 3623.2
C 14 223 1568800 428.65 15641 15713 3623.2
C 7 220 1300786 354.68 15641 15713 3623.2
D 8 195 2544931 686.53 15617 15278 3684.7
D 6 112 542411 143.06 15617 15278 3684.7
D 14 34 539955 142.39 15617 15278 3684.7

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