ASTROSAT CZTI

Data Quality Report

Orbit 34528

Creation date: 2022-02-16T02:49:36.876493
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/AS1A06_005T01_9000004932_34528cztM0_level2.evt modeM0/AS1A06_005T01_9000004932_34528cztM0_level2_quad_clean.evt
Size (bytes)527,279,04082,831,680
Size502.9 MB 79.0 MB
Events in quadrant A2,766,143546,501
Events in quadrant B3,835,445539,083
Events in quadrant C3,091,578531,451
Events in quadrant D5,867,786471,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123463
B0153912
C0130482
D0216542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6012150.249501%
B60122784.624085%
C6012310.515635%
D601282313.689288%

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 7385 6013 4 4 0.05% 0.07%
B 7385 6013 187 187 2.53% 3.11%
C 7385 6013 18 18 0.24% 0.30%
D 7385 6013 674 674 9.13% 11.21%

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 9 143 56234 398.25 688 674 139.5
A 10 83 40397 284.73 688 674 139.5
A 13 6 12384 83.94 688 674 139.5
B 5 172 851957 6547.33 675 657 130.0
B 4 171 163605 1253.23 675 657 130.0
B 0 190 69957 532.98 675 657 130.0
C 15 214 269621 1736.45 666 672 154.9
C 0 10 112173 719.9 666 672 154.9
C 14 67 98743 633.19 666 672 154.9
D 10 118 1790716 11528.94 628 612 155.3
D 8 195 985137 6340.71 628 612 155.3
D 7 80 253577 1629.19 628 612 155.3

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