ASTROSAT CZTI

Data Quality Report

Orbit 30226

Creation date: 2024-06-27T20:12:23.470883
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/AS1A10_007T01_9000004350_30226cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30226cztM0_level2_quad_clean.evt
Size (bytes)575,424,000100,128,960
Size548.8 MB 95.5 MB
Events in quadrant A3,488,230644,337
Events in quadrant B5,491,155649,379
Events in quadrant C3,749,970631,493
Events in quadrant D4,227,284623,261

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144222
B0211482
C0154062
D0169163

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6951410.589843%
B69511071.539347%
C69511011.453028%
D6950540.776978%

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 7981 6952 0 0 0.00% 0.00%
B 7981 6952 0 0 0.00% 0.00%
C 7981 6952 1 1 0.01% 0.01%
D 7980 6951 33 33 0.41% 0.47%

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 15 174 22322 119.55 892 875 179.4
A 8 192 22266 119.23 892 875 179.4
A 13 254 12767 66.29 892 875 179.4
B 6 159 1942270 11486.57 878 856 169.0
B 0 190 40044 231.86 878 856 169.0
B 0 230 35312 203.86 878 856 169.0
C 3 233 252496 1264.1 856 863 199.1
C 14 238 139226 695.08 856 863 199.1
C 2 114 16495 78.53 856 863 199.1
D 8 195 328927 1558.36 866 848 210.5
D 1 52 309582 1466.47 866 848 210.5
D 7 223 247965 1173.79 866 848 210.5

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter