ASTROSAT CZTI

Data Quality Report

Orbit 20151026_P01_044T01_9000000072_level2

Creation date: 2016-09-06T17:59:42.201715
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/AS1P01_044T01_9000000072cztM0_level2_bc.evt modeM0/AS1P01_044T01_9000000072cztM0_level2_quad_clean.evt
Size (bytes)16,342,421,7604,628,197,440
Size15.2 GB 4.3 GB
Events in quadrant A118,162,93527,368,472
Events in quadrant B98,887,87827,807,285
Events in quadrant C105,309,96827,365,425
Events in quadrant D141,583,67026,446,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020394720
B019630080
C018884450
D019067990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093800
B093150
C093360
D092640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024420
B024250
C024430
D024350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45533064301.412163%
B45560031570.692932%
C45565767261.476110%
D45563754181.189104%

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 775535 455872 2773 2773 0.36% 0.61%
B 775535 456094 305 305 0.04% 0.07%
C 775535 456180 646 646 0.08% 0.14%
D 775535 456161 2088 2088 0.27% 0.46%

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 11 191 11588368 2855.09 19724 19312 4052.1
A 0 238 10715489 2639.67 19724 19312 4052.1
A 15 171 4344356 1067.36 19724 19312 4052.1
B 2 32 3242433 910.03 20315 19697 3541.4
B 5 176 1917677 535.95 20315 19697 3541.4
B 5 249 1667800 465.39 20315 19697 3541.4
C 3 159 14948431 3717.38 19459 19115 4016.1
C 5 249 4052017 1004.19 19459 19115 4016.1
C 15 241 2293791 566.39 19459 19115 4016.1
D 1 4 8418591 1945.06 19415 18849 4318.5
D 12 237 7042737 1626.46 19415 18849 4318.5
D 1 5 4559473 1051.43 19415 18849 4318.5

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
Veto Counter