ASTROSAT CZTI

Data Quality Report

Orbit 48334

Creation date: 2024-09-05T00:09:45.889649
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_029T01_9000006422_48334cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48334cztM0_level2_quad_clean.evt
Size (bytes)570,130,560119,266,560
Size543.7 MB 113.7 MB
Events in quadrant A8,184,660767,503
Events in quadrant B4,396,833801,979
Events in quadrant C3,902,270793,384
Events in quadrant D4,033,622721,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296582
B0181603
C0170102
D0174142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75716278.281601%
B75704265.627477%
C75702042.694848%
D75702583.408190%

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 7856 7571 16 16 0.20% 0.21%
B 7855 7571 57 57 0.73% 0.75%
C 7855 7572 14 14 0.18% 0.18%
D 7855 7572 75 75 0.95% 0.99%

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 4687492 25366.49 885 865 184.8
A 13 248 64092 342.22 885 865 184.8
A 13 254 15332 78.3 885 865 184.8
B 5 255 371039 2042.18 893 863 181.3
B 4 21 350564 1929.23 893 863 181.3
B 0 186 59157 321.6 893 863 181.3
C 15 208 239991 1133.84 888 893 210.9
C 0 207 111600 524.99 888 893 210.9
C 12 2 52568 245.05 888 893 210.9
D 13 29 196777 862.41 892 866 227.2
D 7 96 107827 470.85 892 866 227.2
D 5 222 52758 228.43 892 866 227.2

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