ASTROSAT CZTI

Data Quality Report

Orbit 20191126_A08_003T01_9000003342_level2

Creation date: 2019-11-29T11:36:09.480541
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/AS1A08_003T01_9000003342cztM0_level2_bc.evt modeM0/AS1A08_003T01_9000003342cztM0_level2_quad_clean.evt
Size (bytes)3,887,305,9201,436,083,200
Size3.6 GB 1.3 GB
Events in quadrant A23,140,7019,042,730
Events in quadrant B25,712,3259,219,238
Events in quadrant C22,886,0488,927,474
Events in quadrant D38,388,4058,665,212

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02326910
B02455450
C02348410
D02831910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022720
B022720
C022720
D022720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11154311010.987063%
B11154322402.008194%
C11154319651.761652%
D11154344944.028940%

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 127769 111529 0 0 0.00% 0.00%
B 127769 111524 8 8 0.01% 0.01%
C 127769 111529 1 1 0.00% 0.00%
D 127769 111532 1056 1056 0.83% 0.95%

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 167697 124.85 5987 5876 1296.2
A 3 1 43749 29.22 5987 5876 1296.2
A 0 226 38805 25.4 5987 5876 1296.2
B 15 33 1848894 1635.26 6036 5882 1127.0
B 0 245 137716 116.97 6036 5882 1127.0
B 5 172 126569 107.08 6036 5882 1127.0
C 0 10 138580 97.48 5840 5818 1362.0
C 10 22 136287 95.79 5840 5818 1362.0
C 10 91 71330 48.1 5840 5818 1362.0
D 1 52 12489860 9179.56 5878 5674 1360.0
D 12 227 1550727 1136.07 5878 5674 1360.0
D 13 172 497604 361.71 5878 5674 1360.0

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