ASTROSAT CZTI

Data Quality Report

Orbit 20220506_A09_029T01_9000005116_level2

Creation date: 2022-05-11T13:47:54.571162
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/AS1A09_029T01_9000005116cztM0_level2_bc.evt modeM0/AS1A09_029T01_9000005116cztM0_level2_quad_clean.evt
Size (bytes)940,521,600335,917,440
Size897.0 MB 320.4 MB
Events in quadrant A5,427,1872,208,218
Events in quadrant B7,269,1352,194,572
Events in quadrant C7,078,6582,123,255
Events in quadrant D7,133,0012,061,488

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480470
B0566320
C0528140
D0539870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23070370.160381%
B230709334.044213%
C230704742.054616%
D230703751.625488%

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 32691 23075 2 2 0.01% 0.01%
B 32690 23068 67 67 0.20% 0.29%
C 32690 23069 111 111 0.34% 0.48%
D 32690 23069 85 85 0.26% 0.37%

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 10 83 524946 1900.64 1241 1225 275.6
A 7 48 31401 109.51 1241 1225 275.6
A 13 6 24301 83.75 1241 1225 275.6
B 5 172 1847859 7644.52 1213 1187 241.6
B 5 255 278603 1148.4 1213 1187 241.6
B 0 189 239483 986.45 1213 1187 241.6
C 0 10 1014866 3785.86 1170 1161 267.8
C 15 214 911665 3400.43 1170 1161 267.8
C 9 187 434330 1617.74 1170 1161 267.8
D 1 52 547542 1923.75 1200 1165 284.0
D 12 6 370458 1300.25 1200 1165 284.0
D 13 249 332520 1166.67 1200 1165 284.0

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