ASTROSAT CZTI

Data Quality Report

Orbit 20190924_A06_009T03_9000003198_level2

Creation date: 2019-09-25T15:27:33.630514
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/AS1A06_009T03_9000003198cztM0_level2_bc.evt modeM0/AS1A06_009T03_9000003198cztM0_level2_quad_clean.evt
Size (bytes)364,855,680129,309,120
Size348.0 MB 123.3 MB
Events in quadrant A2,387,486830,443
Events in quadrant B2,548,287841,607
Events in quadrant C2,320,831808,120
Events in quadrant D3,139,357777,721

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204240
B0211550
C0208770
D0232880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9497330.347478%
B9497610.642308%
C94971271.337264%
D94971301.368853%

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 10851 9497 1 1 0.01% 0.01%
B 10851 9496 0 0 0.00% 0.00%
C 10851 9497 0 0 0.00% 0.00%
D 10851 9496 7 7 0.06% 0.07%

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 11207 80.46 618 612 131.7
A 15 48 5262 35.31 618 612 131.7
A 8 31 5230 35.07 618 612 131.7
B 0 230 58015 500.16 629 620 114.8
B 0 190 21941 185.8 629 620 114.8
B 0 219 17602 147.99 629 620 114.8
C 3 233 23257 165.1 596 598 137.2
C 7 220 4817 30.74 596 598 137.2
C 13 61 3467 20.9 596 598 137.2
D 12 235 178874 1323.62 602 584 134.7
D 13 153 155637 1151.11 602 584 134.7
D 2 136 153276 1133.58 602 584 134.7

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