ASTROSAT CZTI

Data Quality Report

Orbit 00934

Creation date: 2024-06-27T14:04:59.680080
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_998T01_9000000188_00934cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00934cztM0_level2_quad_clean.evt
Size (bytes)1,041,215,04097,058,880
Size993.0 MB 92.6 MB
Events in quadrant A7,768,371631,344
Events in quadrant B8,265,009630,797
Events in quadrant C7,624,428618,568
Events in quadrant D7,440,130601,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277100
B0291790
C0272710
D0268300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6560190.289634%
B6560210.320122%
C656080.121951%
D6560871.326220%

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 7225 6561 138 138 1.91% 2.10%
B 7225 6561 195 195 2.70% 2.97%
C 7225 6561 140 140 1.94% 2.13%
D 7225 6561 213 213 2.95% 3.25%

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 14 170 61226 122.24 2006 2022 484.3
A 15 233 8072 12.49 2006 2022 484.3
A 3 111 6478 9.2 2006 2022 484.3
B 0 182 100793 199.71 2091 2100 494.2
B 15 22 60122 117.41 2091 2100 494.2
B 4 232 35935 68.47 2091 2100 494.2
C 15 241 216458 412.42 1867 1929 520.2
C 9 144 63035 117.47 1867 1929 520.2
C 3 111 28368 50.83 1867 1929 520.2
D 12 188 505883 900.34 1802 1871 559.8
D 1 4 125760 221.31 1802 1871 559.8
D 2 33 35391 59.88 1802 1871 559.8

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