ASTROSAT CZTI

Data Quality Report

Orbit 20210105_A10_058T09_9000004100_level2

Creation date: 2021-01-11T10:44:30.675808
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_058T09_9000004100cztM0_level2_bc.evt modeM0/AS1A10_058T09_9000004100cztM0_level2_quad_clean.evt
Size (bytes)6,175,310,4001,789,568,640
Size5.8 GB 1.7 GB
Events in quadrant A36,518,48911,576,976
Events in quadrant B37,268,48811,623,406
Events in quadrant C28,862,06111,194,045
Events in quadrant D75,141,17910,507,614

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027620
B027620
C027620
D027620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03135630
B03168470
C02869620
D04497500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13576636742.706127%
B13576745323.338072%
C13576725081.847282%
D135767105557.774349%

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 167607 135750 212 212 0.13% 0.16%
B 167607 135746 162 162 0.10% 0.12%
C 167607 135749 0 0 0.00% 0.00%
D 167607 135750 2167 2167 1.29% 1.60%

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 15 174 7721138 4919.41 7354 7240 1568.1
A 13 254 246123 152.34 7354 7240 1568.1
A 1 113 99629 58.92 7354 7240 1568.1
B 10 245 6179790 4446.46 7392 7213 1388.2
B 0 230 770483 549.83 7392 7213 1388.2
B 4 171 507289 360.23 7392 7213 1388.2
C 3 233 1079960 650.68 7053 7031 1648.9
C 7 247 487098 291.14 7053 7031 1648.9
C 14 254 71879 39.33 7053 7031 1648.9
D 1 52 24524734 15246.45 7010 6783 1608.1
D 8 195 19302210 11998.83 7010 6783 1608.1
D 12 233 1621067 1003.84 7010 6783 1608.1

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