ASTROSAT CZTI

Data Quality Report

Orbit 44693

Creation date: 2024-06-27T23:05:22.452692
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/AS1A13_073T04_9000006010_44693cztM0_level2.fits modeM0/AS1A13_073T04_9000006010_44693cztM0_level2_quad_clean.evt
Size (bytes)491,014,080112,230,720
Size468.3 MB 107.0 MB
Events in quadrant A6,304,886732,180
Events in quadrant B3,521,193775,645
Events in quadrant C3,179,266756,947
Events in quadrant D4,644,745662,076

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240342
B0150282
C0143212
D0185112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67704015.923191%
B67701782.629247%
C6770701.033973%
D67704286.322009%

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 7855 6771 192 192 2.44% 2.84%
B 7855 6771 37 37 0.47% 0.55%
C 7855 6771 21 21 0.27% 0.31%
D 7855 6771 266 266 3.39% 3.93%

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 2055185 12860.99 766 750 159.7
A 15 223 1196731 7486.97 766 750 159.7
A 12 227 57923 357.91 766 750 159.7
B 4 171 166843 1092.35 774 749 152.1
B 5 255 122082 797.97 774 749 152.1
B 0 189 102946 672.12 774 749 152.1
C 3 233 110826 619.01 762 765 177.8
C 14 254 81745 455.45 762 765 177.8
C 12 250 7722 39.13 762 765 177.8
D 13 249 753681 4120.72 738 715 182.7
D 11 241 271852 1483.84 738 715 182.7
D 2 249 180051 981.44 738 715 182.7

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