ASTROSAT CZTI

Data Quality Report

Orbit 20160125_T01_051T01_9000000292_level2

Creation date: 2016-09-06T17:54:32.806780
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/AS1T01_051T01_9000000292cztM0_level2_bc.evt modeM0/AS1T01_051T01_9000000292cztM0_level2_quad_clean.evt
Size (bytes)2,233,981,4401,068,765,120
Size2.1 GB 1019.3 MB
Events in quadrant A12,314,7177,038,350
Events in quadrant B12,723,9747,052,893
Events in quadrant C13,459,3026,862,342
Events in quadrant D24,402,2786,638,100

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013980
B013980
C013980
D013980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B1150
C1150
D110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02973120
B03048430
C02917010
D03176080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A697591550.222194%
B697531530.219345%
C697552060.295319%
D6975922283.193853%

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 80176 69760 0 0 0.00% 0.00%
B 80176 69756 2 2 0.00% 0.00%
C 80176 69760 30 30 0.04% 0.04%
D 80176 69760 956 956 1.19% 1.37%

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 0 231 191479 289.15 3119 3055 651.6
A 10 2 77404 114.1 3119 3055 651.6
A 15 175 39877 56.51 3119 3055 651.6
B 0 234 150769 261.9 3172 3077 563.9
B 0 244 99228 170.5 3172 3077 563.9
B 4 200 92228 158.09 3172 3077 563.9
C 8 208 1055841 1643.38 3029 2967 640.7
C 1 192 254116 392.01 3029 2967 640.7
C 2 53 184856 283.9 3029 2967 640.7
D 7 85 4530476 6980.6 3012 2919 648.6
D 10 172 3052481 4701.82 3012 2919 648.6
D 1 83 1012649 1556.8 3012 2919 648.6

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