ASTROSAT CZTI

Data Quality Report

Orbit 20201201_A10_021T08_9000004042_level2

Creation date: 2021-01-07T03:30:56.881314
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/AS1A10_021T08_9000004042cztM0_level2_bc.evt modeM0/AS1A10_021T08_9000004042cztM0_level2_quad_clean.evt
Size (bytes)1,516,665,600459,112,320
Size1.4 GB 437.8 MB
Events in quadrant A7,678,6192,968,163
Events in quadrant B8,186,2853,017,621
Events in quadrant C7,868,0022,867,730
Events in quadrant D19,782,9972,625,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0742160
B0766990
C0765550
D01199760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0480
C0480
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07270
B07280
C07260
D07260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A353285791.638927%
B353358532.414037%
C353209482.684032%
D35278486413.787630%

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 45813 33670 0 0 0.00% 0.00%
B 45813 33660 17 17 0.04% 0.05%
C 45813 33660 0 0 0.00% 0.00%
D 45811 33609 1490 1490 3.25% 4.43%

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 345405 838.93 1887 1852 409.5
A 13 254 50644 119.15 1887 1852 409.5
A 8 192 27792 63.34 1887 1852 409.5
B 10 245 533214 1482.47 1896 1848 358.4
B 15 32 80502 219.44 1896 1848 358.4
B 0 190 80153 218.47 1896 1848 358.4
C 3 233 516294 1219.01 1805 1795 422.1
C 2 16 286303 674.09 1805 1795 422.1
C 15 208 127975 298.96 1805 1795 422.1
D 1 52 7295866 18439.14 1716 1661 395.6
D 8 195 3522772 8901.07 1716 1661 395.6
D 7 80 1266504 3197.42 1716 1661 395.6

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