ASTROSAT CZTI

Data Quality Report

Orbit 32279

Creation date: 2024-06-27T20:38:23.597195
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/AS1A09_131T01_9000004696_32279cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32279cztM0_level2_quad_clean.evt
Size (bytes)609,079,680124,810,560
Size580.9 MB 119.0 MB
Events in quadrant A3,247,084838,907
Events in quadrant B5,550,955853,465
Events in quadrant C3,736,363853,366
Events in quadrant D5,491,774800,721

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137003
B0209632
C0152382
D0203942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6209590.950234%
B62092083.349976%
C62092343.768723%
D62093475.588662%

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 7529 6210 3 3 0.04% 0.05%
B 7529 6209 16 16 0.21% 0.26%
C 7529 6210 32 32 0.43% 0.52%
D 7529 6210 117 117 1.55% 1.88%

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 6 24363 143.36 830 816 164.2
A 0 6 16463 95.27 830 816 164.2
A 13 254 12052 68.41 830 816 164.2
B 6 159 1890576 12383.13 831 811 152.6
B 0 190 215095 1404.15 831 811 152.6
B 5 172 70250 455.02 831 811 152.6
C 0 10 179827 961.06 816 822 186.3
C 14 238 136667 729.34 816 822 186.3
C 3 233 134097 715.54 816 822 186.3
D 8 195 2152735 11326.6 808 787 190.0
D 13 249 127188 665.3 808 787 190.0
D 12 233 31012 159.09 808 787 190.0

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