ASTROSAT CZTI

Data Quality Report

Orbit 27789

Creation date: 2024-06-27T19:44:25.338869
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_016T01_9000004016_27789cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27789cztM0_level2_quad_clean.evt
Size (bytes)546,215,04079,608,960
Size520.9 MB 75.9 MB
Events in quadrant A3,245,031503,059
Events in quadrant B3,585,511510,180
Events in quadrant C3,774,907488,256
Events in quadrant D5,507,440466,875

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135250
B0145850
C0151590
D0208650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347360.567197%
B6347971.528281%
C63471372.158500%
D63464527.122597%

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 7487 6347 0 0 0.00% 0.00%
B 7487 6347 43 43 0.57% 0.68%
C 7487 6347 42 42 0.56% 0.66%
D 7486 6346 397 397 5.30% 6.26%

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 11027 59.97 841 825 170.1
A 3 137 7553 39.55 841 825 170.1
A 0 226 7319 38.17 841 825 170.1
B 10 245 139328 887.47 825 806 156.1
B 3 64 86211 547.17 825 806 156.1
B 4 52 70421 446.0 825 806 156.1
C 3 233 484741 2590.16 806 815 186.8
C 14 238 128819 685.13 806 815 186.8
C 10 22 7714 36.93 806 815 186.8
D 1 52 1764649 9313.36 796 776 189.4
D 13 104 404859 2133.58 796 776 189.4
D 7 223 150931 792.83 796 776 189.4

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