ASTROSAT CZTI

Data Quality Report

Orbit 33195

Creation date: 2024-06-27T20:45:58.274325
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/AS1A10_067T01_9000004770_33195cztM0_level2.evt modeM0/AS1A10_067T01_9000004770_33195cztM0_level2_quad_clean.evt
Size (bytes)115,312,3209,817,920
Size110.0 MB 9.4 MB
Events in quadrant A483,13358,048
Events in quadrant B1,598,95750,987
Events in quadrant C642,86355,936
Events in quadrant D697,90355,952

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019832
B054281
C024871
D028021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97810.102249%
B97842143.047035%
C978555.623722%
D97870.715746%

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 2651 979 0 0 0.00% 0.00%
B 2651 979 261 261 9.85% 26.66%
C 2651 979 36 36 1.36% 3.68%
D 2651 979 3 3 0.11% 0.31%

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 2893 101.6 123 120 27.3
A 13 254 1808 61.85 123 120 27.3
A 3 137 1317 43.86 123 120 27.3
B 5 31 426071 18388.59 109 106 23.2
B 5 172 215051 9279.01 109 106 23.2
B 5 15 199324 8600.09 109 106 23.2
C 0 10 102577 3515.91 117 118 29.1
C 1 23 49798 1704.77 117 118 29.1
C 1 241 13921 473.64 117 118 29.1
D 8 195 61144 1992.78 120 117 30.6
D 2 250 45981 1497.65 120 117 30.6
D 10 203 42819 1394.4 120 117 30.6

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