ASTROSAT CZTI

Data Quality Report

Orbit 20200319_A07_160T05_9000003580_level2

Creation date: 2020-03-27T10:35:35.712320
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/AS1A07_160T05_9000003580cztM0_level2_bc.evt modeM0/AS1A07_160T05_9000003580cztM0_level2_quad_clean.evt
Size (bytes)1,847,367,360708,580,800
Size1.7 GB 675.8 MB
Events in quadrant A10,906,5944,696,444
Events in quadrant B10,847,6044,729,291
Events in quadrant C13,858,2394,350,146
Events in quadrant D16,966,0594,296,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010060
B010060
C010060
D010060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01029490
B01030470
C01143610
D01207670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494267441.505281%
B494268341.687371%
C4942618523.747016%
D4942610052.033343%

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 57486 49423 16 16 0.03% 0.03%
B 57486 49421 1 1 0.00% 0.00%
C 57486 49423 115 115 0.20% 0.23%
D 57486 49425 110 110 0.19% 0.22%

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 6 16 140866 231.53 2777 2737 596.6
A 13 254 74579 120.42 2777 2737 596.6
A 3 1 44628 70.22 2777 2737 596.6
B 0 230 44568 81.05 2792 2734 516.2
B 4 216 33316 59.25 2792 2734 516.2
B 0 245 25417 43.95 2792 2734 516.2
C 2 16 2005050 3290.53 2597 2588 608.6
C 7 247 1841790 3022.25 2597 2588 608.6
C 3 233 35348 53.83 2597 2588 608.6
D 8 195 4594160 7462.71 2665 2580 615.3
D 7 238 1142454 1852.64 2665 2580 615.3
D 1 52 395953 639.35 2665 2580 615.3

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