ASTROSAT CZTI

Data Quality Report

Orbit 20161226_G06_066T01_9000000928_level2

Creation date: 2017-09-22T16:12:04.762266
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_066T01_9000000928cztM0_level2.evt modeM0/AS1G06_066T01_9000000928cztM0_level2_quad_clean.evt
Size (bytes)612,017,280109,739,520
Size583.7 MB 104.7 MB
Events in quadrant A4,111,528708,138
Events in quadrant B3,855,486718,299
Events in quadrant C3,595,170702,042
Events in quadrant D6,441,060649,452

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175130
B0166240
C0160290
D0243080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78551722.189688%
B78551061.349459%
C7855560.712922%
D78554936.276257%

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 8865 7856 44 44 0.50% 0.56%
B 8865 7856 23 23 0.26% 0.29%
C 8865 7856 0 0 0.00% 0.00%
D 8865 7856 451 451 5.09% 5.74%

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 519140 2809.63 911 890 184.5
A 8 15 39286 208.16 911 890 184.5
A 15 236 18367 94.75 911 890 184.5
B 0 214 73534 417.0 913 892 174.2
B 3 220 64185 363.33 913 892 174.2
B 4 48 56818 321.04 913 892 174.2
C 9 16 97894 475.84 878 881 203.9
C 9 247 62364 301.57 878 881 203.9
C 13 61 6870 29.38 878 881 203.9
D 2 33 1174815 5520.64 871 845 212.7
D 2 152 523639 2458.46 871 845 212.7
D 8 195 459961 2159.01 871 845 212.7

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