ASTROSAT CZTI

Data Quality Report

Orbit 20220208_A05_082T10_9000004916_level2

Creation date: 2022-02-11T10:21:30.030149
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_082T10_9000004916cztM0_level2_bc.evt modeM0/AS1A05_082T10_9000004916cztM0_level2_quad_clean.evt
Size (bytes)951,197,760247,458,240
Size907.1 MB 236.0 MB
Events in quadrant A4,420,7181,535,398
Events in quadrant B6,288,6581,550,083
Events in quadrant C5,736,2751,535,931
Events in quadrant D10,933,3531,433,567

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04260
B04260
C04260
D04260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0429220
B0519260
C0456220
D0657180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20912390.186496%
B209127783.720352%
C20912460.219969%
D2091210825.174063%

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 39172 20915 0 0 0.00% 0.00%
B 39172 20913 31 31 0.08% 0.15%
C 39172 20913 7 7 0.02% 0.03%
D 39172 20913 151 151 0.39% 0.72%

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 7 16 110975 463.24 1072 1053 237.3
A 10 83 80271 333.85 1072 1053 237.3
A 13 6 40745 167.27 1072 1053 237.3
B 5 172 1347186 6374.06 1061 1038 211.2
B 0 190 510175 2410.78 1061 1038 211.2
B 0 229 76049 355.18 1061 1038 211.2
C 15 214 823184 3457.74 1046 1036 237.8
C 14 67 533409 2239.02 1046 1036 237.8
C 0 10 125130 521.91 1046 1036 237.8
D 8 195 2980312 12089.54 1030 999 246.4
D 7 80 1433941 5814.63 1030 999 246.4
D 2 250 584929 2369.49 1030 999 246.4

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