ASTROSAT CZTI

Data Quality Report

Orbit 20171008_G08_027T06_9000001594_level2

Creation date: 2020-06-09T23:05:50.423100
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1G08_027T06_9000001594cztM0_level2_bc.evt modeM0/AS1G08_027T06_9000001594cztM0_level2_quad_clean.evt
Size (bytes)6,370,102,0801,922,679,360
Size5.9 GB 1.8 GB
Events in quadrant A50,900,06812,323,289
Events in quadrant B53,710,77012,342,592
Events in quadrant C32,089,05412,333,655
Events in quadrant D46,662,03011,612,224

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03925240
B04100140
C03198920
D03646640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015280
B015290
C015290
D015270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15022275004.992611%
B150215103446.886130%
C15023723781.582832%
D15023444742.978021%

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 168113 146002 664 664 0.39% 0.45%
B 168113 145984 141 141 0.08% 0.10%
C 168113 146018 94 94 0.06% 0.06%
D 168113 145997 584 584 0.35% 0.40%

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 8 5 10918992 6650.05 7673 7536 1640.8
A 15 223 4222325 2568.73 7673 7536 1640.8
A 8 15 3338758 2030.23 7673 7536 1640.8
B 4 239 20013945 13699.05 7688 7477 1460.4
B 0 214 1024430 696.34 7688 7477 1460.4
B 15 204 629301 425.78 7688 7477 1460.4
C 4 254 2390173 1469.21 7518 7420 1621.8
C 1 3 86317 48.65 7518 7420 1621.8
C 9 54 57924 31.14 7518 7420 1621.8
D 1 52 7813245 4542.66 7498 7232 1718.4
D 8 195 3030489 1759.36 7498 7232 1718.4
D 13 152 909988 525.35 7498 7232 1718.4

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