ASTROSAT CZTI

Data Quality Report

Orbit 43954

Creation date: 2024-06-27T22:57:37.270291
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/AS1A13_025T01_9000005920_43954cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43954cztM0_level2_quad_clean.evt
Size (bytes)455,765,760108,296,640
Size434.7 MB 103.3 MB
Events in quadrant A6,065,343704,463
Events in quadrant B3,409,007744,102
Events in quadrant C3,111,382725,166
Events in quadrant D3,779,424651,288

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227403
B0144391
C0138821
D0156501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65123214.929361%
B65121412.165233%
C6512450.691032%
D65121322.027027%

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 7547 6513 140 140 1.86% 2.15%
B 7547 6512 28 28 0.37% 0.43%
C 7547 6513 16 16 0.21% 0.25%
D 7547 6513 88 88 1.17% 1.35%

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 15 222 1777424 11572.1 736 719 153.5
A 10 83 1098963 7153.12 736 719 153.5
A 14 238 292083 1897.72 736 719 153.5
B 5 172 218629 1485.02 744 722 146.7
B 5 235 138857 941.38 744 722 146.7
B 0 213 29609 196.86 744 722 146.7
C 14 254 107321 615.0 731 736 173.3
C 1 241 66419 379.0 731 736 173.3
C 15 157 56267 320.42 731 736 173.3
D 5 235 390003 2135.82 723 701 182.3
D 4 235 184917 1010.66 723 701 182.3
D 2 136 102438 558.16 723 701 182.3

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