ASTROSAT CZTI

Data Quality Report

Orbit 20200326_A07_027T10_9000003592_level2

Creation date: 2020-03-27T12:38:20.122215
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_027T10_9000003592cztM0_level2_bc.evt modeM0/AS1A07_027T10_9000003592cztM0_level2_quad_clean.evt
Size (bytes)747,192,960183,588,480
Size712.6 MB 175.1 MB
Events in quadrant A3,128,2071,149,623
Events in quadrant B3,181,4871,168,737
Events in quadrant C5,919,1281,107,270
Events in quadrant D9,330,7431,057,223

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324530
B0325700
C0418060
D0572520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156225733.667904%
B156226254.000768%
C156227995.114582%
D15622175611.240558%

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 16362 15621 0 0 0.00% 0.00%
B 16362 15618 0 0 0.00% 0.00%
C 16362 15620 2 2 0.01% 0.01%
D 16362 15617 149 149 0.91% 0.95%

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 13 254 22167 120.43 806 789 177.5
A 0 226 5347 25.68 806 789 177.5
A 12 194 4858 22.92 806 789 177.5
B 0 230 19760 119.68 815 794 158.5
B 0 190 16394 98.44 815 794 158.5
B 4 52 13941 82.96 815 794 158.5
C 7 247 2632118 14174.37 779 773 185.6
C 2 16 265945 1428.41 779 773 185.6
C 8 128 11414 57.32 779 773 185.6
D 1 52 4953474 26777.54 777 746 185.0
D 8 195 853383 4609.89 777 746 185.0
D 12 233 321635 1734.93 777 746 185.0

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