ASTROSAT CZTI

Data Quality Report

Orbit 20210430_A10_007T01_9000004350_level2

Creation date: 2021-05-11T15:23:48.059755
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_007T01_9000004350cztM0_level2_bc.evt modeM0/AS1A10_007T01_9000004350cztM0_level2_quad_clean.evt
Size (bytes)17,871,877,4404,729,852,800
Size16.6 GB 4.4 GB
Events in quadrant A89,941,32530,340,115
Events in quadrant B222,545,94428,784,971
Events in quadrant C83,536,19330,309,829
Events in quadrant D121,104,70329,502,578

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05540
B05540
C05540
D05540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072320
B072300
C072280
D072240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07908230
B013392790
C07794040
D08870030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35511888452.490721%
B3547895616015.829127%
C35516494142.650606%
D355142117683.313604%

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 418542 355664 1300 1300 0.31% 0.37%
B 418542 355335 1099 1099 0.26% 0.31%
C 418542 355737 11 11 0.00% 0.00%
D 418542 355757 1568 1568 0.37% 0.44%

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 14 239 11617972 2844.91 19221 18917 4077.1
A 0 13 3081999 751.28 19221 18917 4077.1
A 8 192 654688 155.94 19221 18917 4077.1
B 6 159 89812893 26217.83 18230 17800 3425.0
B 6 36 59457515 17354.85 18230 17800 3425.0
B 4 80 1398605 403.16 18230 17800 3425.0
C 3 233 9063702 2012.21 18957 18882 4495.0
C 2 114 674114 145.77 18957 18882 4495.0
C 14 254 467557 99.82 18957 18882 4495.0
D 1 52 17355037 3928.52 18941 18446 4413.0
D 8 195 14317151 3240.13 18941 18446 4413.0
D 2 250 4350113 981.57 18941 18446 4413.0

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter