ASTROSAT CZTI

Data Quality Report

Orbit 20200616_A07_147T01_9000003722_level2

Creation date: 2021-01-10T13:28:23.312901
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_147T01_9000003722cztM0_level2_bc.evt modeM0/AS1A07_147T01_9000003722cztM0_level2_quad_clean.evt
Size (bytes)6,158,672,6402,293,122,240
Size5.7 GB 2.1 GB
Events in quadrant A38,074,05614,783,770
Events in quadrant B39,167,54514,909,006
Events in quadrant C37,115,31913,988,380
Events in quadrant D60,149,12613,695,505

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035900
B035900
C035900
D035900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03689430
B03733810
C03722900
D04358310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17640825231.430207%
B17640830661.738016%
C17640836272.056029%
D17640845122.557707%

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 203684 176417 0 0 0.00% 0.00%
B 203684 176413 8 8 0.00% 0.00%
C 203684 176412 27 27 0.01% 0.02%
D 203684 176412 732 732 0.36% 0.41%

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 254433 116.55 9831 9665 2100.1
A 6 16 111719 48.59 9831 9665 2100.1
A 13 220 63196 25.49 9831 9665 2100.1
B 0 190 393356 206.74 9906 9682 1855.8
B 0 229 291374 151.79 9906 9682 1855.8
B 3 112 251367 130.23 9906 9682 1855.8
C 2 16 1055243 483.13 9281 9256 2165.0
C 3 233 305769 136.96 9281 9256 2165.0
C 7 247 70295 28.19 9281 9256 2165.0
D 1 52 13008917 5931.09 9470 9139 2191.8
D 8 195 7314498 3333.04 9470 9139 2191.8
D 12 233 1469520 666.29 9470 9139 2191.8

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