ASTROSAT CZTI

Data Quality Report

Orbit 15072

Creation date: 2024-06-27T17:03:21.818588
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/AS1T02_060T01_9000002216_15072cztM0_level2.evt modeM0/AS1T02_060T01_9000002216_15072cztM0_level2_quad_clean.evt
Size (bytes)652,844,16091,359,360
Size622.6 MB 87.1 MB
Events in quadrant A4,089,424553,789
Events in quadrant B4,177,041564,998
Events in quadrant C6,841,909534,976
Events in quadrant D4,092,121527,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176444
B0177373
C0264983
D0181123

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84283103.678215%
B84283303.915520%
C84285476.490271%
D84282412.859516%

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 9009 8430 0 0 0.00% 0.00%
B 9009 8431 0 0 0.00% 0.00%
C 9009 8430 62 62 0.69% 0.74%
D 9009 8431 24 24 0.27% 0.28%

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 0 226 9198 38.08 1060 1037 214.3
A 3 137 7773 31.43 1060 1037 214.3
A 12 194 7661 30.9 1060 1037 214.3
B 3 64 37306 174.86 1054 1027 207.5
B 12 111 26092 120.81 1054 1027 207.5
B 11 111 22363 102.84 1054 1027 207.5
C 3 233 2908673 12410.39 1001 1006 234.3
C 3 232 16845 67.6 1001 1006 234.3
C 3 234 15580 62.2 1001 1006 234.3
D 13 249 88350 348.77 1022 990 250.5
D 9 1 50592 198.03 1022 990 250.5
D 13 104 48970 191.55 1022 990 250.5

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