ASTROSAT CZTI

Data Quality Report

Orbit 20161112_G06_168T02_9000000790_level2

Creation date: 2017-09-19T01:48:42.557075
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_168T02_9000000790cztM0_level2.evt modeM0/AS1G06_168T02_9000000790cztM0_level2_quad_clean.evt
Size (bytes)582,422,400124,686,720
Size555.4 MB 118.9 MB
Events in quadrant A4,058,032818,757
Events in quadrant B4,544,401817,092
Events in quadrant C3,542,687816,863
Events in quadrant D4,958,037774,882

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172280
B0188740
C0162060
D0203910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7901700.885964%
B79023324.201468%
C7902420.531511%
D79013093.910897%

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 8982 7902 0 0 0.00% 0.00%
B 8982 7902 167 167 1.86% 2.11%
C 8982 7903 0 0 0.00% 0.00%
D 8982 7902 202 202 2.25% 2.56%

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 413811 2141.52 943 925 192.8
A 0 226 9153 42.68 943 925 192.8
A 14 111 9135 42.58 943 925 192.8
B 3 64 837686 4641.75 931 909 180.3
B 0 219 45653 248.2 931 909 180.3
B 4 81 17450 91.76 931 909 180.3
C 1 16 22158 101.12 901 907 210.2
C 13 61 7215 30.02 901 907 210.2
C 9 16 4751 18.29 901 907 210.2
D 11 241 1257610 5636.92 904 876 222.9
D 13 169 146697 654.06 904 876 222.9
D 2 14 30812 134.27 904 876 222.9

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