ASTROSAT CZTI

Data Quality Report

Orbit 20200823_C05_019T04_9000003838_level2

Creation date: 2021-01-09T03:25:03.604954
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/AS1C05_019T04_9000003838cztM0_level2_bc.evt modeM0/AS1C05_019T04_9000003838cztM0_level2_quad_clean.evt
Size (bytes)1,243,460,160470,191,680
Size1.2 GB 448.4 MB
Events in quadrant A6,232,7303,288,387
Events in quadrant B9,310,6683,089,003
Events in quadrant C7,381,8503,090,908
Events in quadrant D12,944,5132,971,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05380
B05380
C05360
D05400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0430
C0430
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561650
B0712550
C0620710
D0828180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A263552210.838551%
B2596319187.387436%
C262099053.453012%
D2618221818.330150%

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 85062 26749 3 3 0.00% 0.01%
B 85062 26265 52 52 0.06% 0.20%
C 85061 26648 54 54 0.06% 0.20%
D 85061 26600 215 215 0.25% 0.81%

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 0 13 280819 832.91 1505 1482 335.4
A 6 16 77211 225.8 1505 1482 335.4
A 13 254 42415 122.05 1505 1482 335.4
B 0 189 2205343 7992.7 1422 1396 275.7
B 7 205 982952 3559.65 1422 1396 275.7
B 3 112 139112 499.43 1422 1396 275.7
C 1 0 1043017 3091.64 1411 1414 336.9
C 3 233 491967 1456.04 1411 1414 336.9
C 15 208 204366 602.39 1411 1414 336.9
D 7 80 4043641 11053.88 1402 1366 365.7
D 1 52 2221865 6072.11 1402 1366 365.7
D 2 250 795719 2172.21 1402 1366 365.7

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