ASTROSAT CZTI

Data Quality Report

Orbit 20210917_A10_053T10_9000004698_level2

Creation date: 2021-09-22T13:40:14.554029
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_053T10_9000004698cztM0_level2_bc.evt modeM0/AS1A10_053T10_9000004698cztM0_level2_quad_clean.evt
Size (bytes)594,555,840163,241,280
Size567.0 MB 155.7 MB
Events in quadrant A2,652,4251,126,905
Events in quadrant B6,378,7711,125,404
Events in quadrant C2,689,961877,452
Events in quadrant D5,493,9791,016,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248250
B0372020
C0279030
D0341310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115221591.379969%
B115223993.462940%
C11522221119.189377%
D115225965.172713%

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 15087 11522 0 0 0.00% 0.00%
B 15087 11522 11 11 0.07% 0.10%
C 15087 11505 1 1 0.01% 0.01%
D 15087 11522 29 29 0.19% 0.25%

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 21267 137.8 683 672 149.5
A 13 6 15484 99.11 683 672 149.5
A 0 226 4329 24.47 683 672 149.5
B 6 159 3145069 24000.65 687 673 131.0
B 0 190 193900 1474.87 687 673 131.0
B 5 172 145318 1104.05 687 673 131.0
C 3 233 158457 1188.26 556 556 132.9
C 14 254 130770 979.91 556 556 132.9
C 0 10 104347 781.06 556 556 132.9
D 8 195 1697274 11291.94 651 630 150.3
D 12 233 550393 3658.92 651 630 150.3
D 14 52 418597 2781.76 651 630 150.3

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