ASTROSAT CZTI

Data Quality Report

Orbit 20210613_A10_071T49_9000004462_level2

Creation date: 2021-06-15T12:38:23.488922
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_071T49_9000004462cztM0_level2_bc.evt modeM0/AS1A10_071T49_9000004462cztM0_level2_quad_clean.evt
Size (bytes)4,561,588,800859,674,240
Size4.2 GB 819.8 MB
Events in quadrant A17,040,2825,692,386
Events in quadrant B74,597,5714,713,074
Events in quadrant C17,074,0285,415,770
Events in quadrant D24,591,9725,324,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014480
B014480
C014480
D014480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01547440
B03780890
C01568110
D01764810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7125516102.259491%
B712552668537.450004%
C7125519382.719809%
D7125517322.430707%

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 82450 71249 122 122 0.15% 0.17%
B 82450 71247 1505 1505 1.83% 2.11%
C 82450 71250 27 27 0.03% 0.04%
D 82450 71249 91 91 0.11% 0.13%

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 1807946 2163.49 3928 3866 833.9
A 13 254 125968 146.43 3928 3866 833.9
A 12 96 29174 30.35 3928 3866 833.9
B 6 36 43676507 68044.1 3379 3310 641.8
B 6 159 16268394 25341.47 3379 3310 641.8
B 5 172 412225 637.1 3379 3310 641.8
C 2 16 1008328 1150.82 3737 3728 872.9
C 0 10 788362 898.84 3737 3728 872.9
C 3 233 621676 707.89 3737 3728 872.9
D 8 195 5725683 6646.8 3770 3669 860.9
D 12 233 2010347 2331.0 3770 3669 860.9
D 2 250 621704 717.92 3770 3669 860.9

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