ASTROSAT CZTI

Data Quality Report

Orbit 20201016_T03_255T01_9000003922_level2

Creation date: 2021-01-07T18:56:21.648333
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/AS1T03_255T01_9000003922cztM0_level2_bc.evt modeM0/AS1T03_255T01_9000003922cztM0_level2_quad_clean.evt
Size (bytes)9,496,272,9603,125,041,920
Size8.8 GB 2.9 GB
Events in quadrant A51,592,70720,670,019
Events in quadrant B63,784,52720,365,554
Events in quadrant C68,684,35319,168,433
Events in quadrant D88,030,65218,841,677

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046460
B046460
C046460
D046460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04868060
B05346300
C05524450
D06106990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22790225771.130749%
B22790273553.227264%
C227902113324.972313%
D227902112624.941598%

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 265022 227893 22 22 0.01% 0.01%
B 265022 227886 388 388 0.15% 0.17%
C 265022 227890 2391 2391 0.90% 1.05%
D 265022 227893 4185 4185 1.58% 1.84%

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 13 248 518492 182.01 12943 12735 2778.8
A 15 174 404208 140.88 12943 12735 2778.8
A 14 235 373938 129.99 12943 12735 2778.8
B 3 64 4852973 2010.4 12825 12545 2407.7
B 5 172 3664583 1516.82 12825 12545 2407.7
B 7 205 2288854 945.43 12825 12545 2407.7
C 2 16 10728479 3853.89 11948 11932 2780.7
C 8 208 10668027 3832.15 11948 11932 2780.7
C 15 208 1059632 376.77 11948 11932 2780.7
D 1 52 28139016 9725.23 12155 11871 2892.2
D 2 250 5661572 1953.44 12155 11871 2892.2
D 12 227 2065830 710.18 12155 11871 2892.2

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