ASTROSAT CZTI

Data Quality Report

Orbit 20181004_A05_096T04_9000002406_level2

Creation date: 2018-10-06T10:40:21.471451
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/AS1A05_096T04_9000002406cztM0_level2_bc.evt modeM0/AS1A05_096T04_9000002406cztM0_level2_quad_clean.evt
Size (bytes)2,712,775,6801,165,829,760
Size2.5 GB 1.1 GB
Events in quadrant A16,961,4217,610,214
Events in quadrant B25,139,1357,526,035
Events in quadrant C15,893,4937,600,758
Events in quadrant D19,052,5607,437,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015240
B015240
C015240
D015240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01618720
B01956920
C01562450
D01666280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7495216582.212082%
B7495251066.812360%
C7495212711.695752%
D7495214731.965258%

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 87003 74954 39 39 0.04% 0.05%
B 87003 74944 348 348 0.40% 0.46%
C 87003 74954 0 0 0.00% 0.00%
D 87003 74955 60 60 0.07% 0.08%

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 15 174 1941588 2302.08 3895 3827 841.7
A 3 1 41951 45.29 3895 3827 841.7
A 0 226 25711 26.0 3895 3827 841.7
B 3 112 7932697 10973.97 3851 3760 722.5
B 0 189 429933 589.84 3851 3760 722.5
B 0 198 359453 492.29 3851 3760 722.5
C 3 233 759875 827.44 3882 3866 913.7
C 0 207 154992 165.41 3882 3866 913.7
C 7 247 48252 48.58 3882 3866 913.7
D 12 110 1035898 1134.3 3938 3805 909.9
D 2 14 963743 1055.0 3938 3805 909.9
D 1 52 517248 564.29 3938 3805 909.9

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