ASTROSAT CZTI

Data Quality Report

Orbit 20200916_T03_224T01_9000003872_level2

Creation date: 2021-01-08T07:40:38.394536
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/AS1T03_224T01_9000003872cztM0_level2_bc.evt modeM0/AS1T03_224T01_9000003872cztM0_level2_quad_clean.evt
Size (bytes)4,587,189,1201,283,405,760
Size4.3 GB 1.2 GB
Events in quadrant A32,075,3408,187,886
Events in quadrant B30,199,8188,408,882
Events in quadrant C21,180,6918,201,463
Events in quadrant D48,741,1857,297,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02431010
B02368130
C02084640
D03260200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020160
B020160
C020160
D020160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01550
B01550
C01550
D01550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9884929472.981315%
B9884932183.255470%
C9884920292.052626%
D988491321113.364829%

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 114299 98846 247 247 0.22% 0.25%
B 114299 98839 391 391 0.34% 0.40%
C 114299 98847 6 6 0.01% 0.01%
D 114299 98735 1852 1852 1.62% 1.88%

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 13 10758260 9333.05 5429 5340 1152.1
A 6 16 278810 237.36 5429 5340 1152.1
A 13 254 150516 126.01 5429 5340 1152.1
B 3 64 2872389 2771.97 5540 5420 1034.3
B 0 189 2812074 2713.66 5540 5420 1034.3
B 0 190 1404948 1353.16 5540 5420 1034.3
C 0 79 315396 249.28 5332 5323 1243.9
C 15 208 138789 107.3 5332 5323 1243.9
C 3 233 128592 99.1 5332 5323 1243.9
D 7 80 20158697 18035.08 4967 4848 1117.5
D 1 52 3070698 2743.54 4967 4848 1117.5
D 2 250 2272367 2029.13 4967 4848 1117.5

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