ASTROSAT CZTI

Data Quality Report

Orbit 35393

Creation date: 2022-04-16T12:19:20.006148
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/AS1A11_099T01_9000005068_35393cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35393cztM0_level2_quad_clean.evt
Size (bytes)764,732,16047,695,680
Size729.3 MB 45.5 MB
Events in quadrant A2,690,951357,555
Events in quadrant B9,101,571184,945
Events in quadrant C3,276,220346,089
Events in quadrant D7,756,068204,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106903
B0304472
C0126862
D0264972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4979160.321350%
B4979286257.481422%
C49791563.133159%
D4979206141.393854%

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 7134 4980 8 8 0.11% 0.16%
B 7134 4980 2388 2388 33.47% 47.95%
C 7134 4980 118 118 1.65% 2.37%
D 7134 4980 1715 1715 24.04% 34.44%

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 10 83 124076 943.4 647 636 130.8
A 9 143 38736 291.18 647 636 130.8
A 10 255 15399 112.83 647 636 130.8
B 4 251 5392746 63601.2 447 437 84.8
B 5 14 410649 4838.37 447 437 84.8
B 5 236 408096 4808.26 447 437 84.8
C 0 10 457923 3270.6 607 614 139.8
C 15 214 206613 1473.27 607 614 139.8
C 0 207 173041 1233.17 607 614 139.8
D 7 80 4969667 42369.71 474 461 117.3
D 8 195 217616 1851.56 474 461 117.3
D 1 47 200358 1704.41 474 461 117.3

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