ASTROSAT CZTI

Data Quality Report

Orbit 20170122_G06_029T02_9000000974_level2

Creation date: 2017-09-22T22:19:34.434054
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/AS1G06_029T02_9000000974cztM0_level2.evt modeM0/AS1G06_029T02_9000000974cztM0_level2_quad_clean.evt
Size (bytes)5,779,054,080993,571,200
Size5.4 GB 947.5 MB
Events in quadrant A38,640,7766,162,622
Events in quadrant B39,914,4256,293,712
Events in quadrant C38,617,0836,182,155
Events in quadrant D52,327,0425,845,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01706740
B01733590
C01723040
D02101880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016680
B016680
C016680
D016680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8184413521.651923%
B8184411651.423440%
C8184410641.300034%
D8184332483.968574%

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 99298 81850 120 120 0.12% 0.15%
B 99298 81847 34 34 0.03% 0.04%
C 99298 81852 223 223 0.22% 0.27%
D 99298 81851 1844 1844 1.86% 2.25%

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 14 111 471378 237.08 9657 9443 1948.5
A 8 15 451965 227.11 9657 9443 1948.5
A 13 248 409570 205.36 9657 9443 1948.5
B 0 214 840356 449.04 9738 9490 1850.3
B 0 219 539895 286.66 9738 9490 1850.3
B 4 81 441255 233.35 9738 9490 1850.3
C 4 254 1763632 806.61 9392 9430 2174.8
C 10 22 132692 56.68 9392 9430 2174.8
C 13 61 73581 29.5 9392 9430 2174.8
D 2 216 10084622 4409.05 9310 9017 2285.2
D 8 195 3107692 1355.97 9310 9017 2285.2
D 2 14 2547313 1110.75 9310 9017 2285.2

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