ASTROSAT CZTI

Data Quality Report

Orbit 02941

Creation date: 2024-06-27T14:22:30.474684
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/AS1P01_999T99_9000000414_02941cztM0_level2.evt modeM0/AS1P01_999T99_9000000414_02941cztM0_level2_quad_clean.evt
Size (bytes)564,076,80038,946,240
Size537.9 MB 37.1 MB
Events in quadrant A2,887,670217,022
Events in quadrant B2,785,160220,398
Events in quadrant C3,371,098208,170
Events in quadrant D7,699,319180,779

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122673
B0117392
C0134592
D0264012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5018681.355122%
B5018631.255480%
C50184539.027501%
D5018186837.225986%

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 7173 5019 60 60 0.84% 1.20%
B 7173 5019 56 56 0.78% 1.12%
C 7173 5019 234 234 3.26% 4.66%
D 7173 5019 1332 1332 18.57% 26.54%

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 14 63 522678 4948.04 509 498 105.5
A 8 15 179194 1693.28 509 498 105.5
A 0 31 58806 552.51 509 498 105.5
B 3 27 411889 4050.94 519 508 101.6
B 8 3 123917 1215.23 519 508 101.6
B 0 219 92338 904.27 519 508 101.6
C 0 219 1059222 9335.25 480 482 113.4
C 9 204 111148 975.78 480 482 113.4
C 6 80 89323 783.34 480 482 113.4
D 15 50 2003150 18720.08 417 408 107.0
D 15 194 1298716 12135.58 417 408 107.0
D 1 31 850460 7945.63 417 408 107.0

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
Veto Counter