ASTROSAT CZTI

Data Quality Report

Orbit 03049

Creation date: 2024-06-27T14:23:57.475032
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/AS1G05_237T02_9000000422_03049cztM0_level2.evt modeM0/AS1G05_237T02_9000000422_03049cztM0_level2_quad_clean.evt
Size (bytes)1,208,888,640303,091,200
Size1.1 GB 289.1 MB
Events in quadrant A8,882,1321,897,017
Events in quadrant B8,600,6011,933,033
Events in quadrant C8,270,3232,006,504
Events in quadrant D9,490,0001,952,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0910

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426045
B0415545
C0410265
D0445455

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202061820.900723%
B20206480.237553%
C20206310.153420%
D202061430.707711%

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 28826 20210 151 151 0.52% 0.75%
B 28826 20210 25 25 0.09% 0.12%
C 28826 20210 27 27 0.09% 0.13%
D 28826 20210 118 118 0.41% 0.58%

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 14 249 572691 1385.93 2035 1989 411.8
A 0 50 302204 729.06 2035 1989 411.8
A 12 247 75570 178.69 2035 1989 411.8
B 0 219 136062 337.88 2090 2043 396.6
B 0 230 107152 265.0 2090 2043 396.6
B 7 252 105249 260.2 2090 2043 396.6
C 6 80 144207 309.32 2012 2021 459.7
C 15 208 83659 177.6 2012 2021 459.7
C 1 16 48659 101.46 2012 2021 459.7
D 2 152 686547 1390.35 1983 1932 492.4
D 13 114 538367 1089.42 1983 1932 492.4
D 10 213 176305 354.12 1983 1932 492.4

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