ASTROSAT CZTI

Data Quality Report

Orbit 20200127_A07_138T04_9000003462_level2

Creation date: 2020-01-28T15:28:46.302770
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/AS1A07_138T04_9000003462cztM0_level2_bc.evt modeM0/AS1A07_138T04_9000003462cztM0_level2_quad_clean.evt
Size (bytes)532,307,520199,543,680
Size507.6 MB 190.3 MB
Events in quadrant A3,142,4341,283,173
Events in quadrant B3,414,2131,295,603
Events in quadrant C3,283,9651,238,855
Events in quadrant D5,277,8491,217,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303600
B0312950
C0309490
D0370120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146003392.321918%
B146003822.616438%
C146004152.842466%
D146007675.253425%

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 17520 14597 0 0 0.00% 0.00%
B 17520 14598 0 0 0.00% 0.00%
C 17520 14597 0 0 0.00% 0.00%
D 17520 14597 227 227 1.30% 1.56%

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 13 254 20210 108.31 813 797 179.2
A 12 194 5282 25.02 813 797 179.2
A 0 226 5183 24.47 813 797 179.2
B 0 189 106908 689.53 815 798 153.9
B 0 190 56699 363.26 815 798 153.9
B 3 209 36431 231.55 815 798 153.9
C 10 9 238308 1312.34 770 767 181.0
C 8 208 64688 353.14 770 767 181.0
C 7 247 20671 109.96 770 767 181.0
D 1 52 1807978 9758.99 787 761 185.2
D 12 233 95021 509.01 787 761 185.2
D 7 38 80341 429.73 787 761 185.2

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