ASTROSAT CZTI

Data Quality Report

Orbit 40977

Creation date: 2024-06-27T22:22:54.370377
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/AS1A12_052T04_9000005582_40977cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40977cztM0_level2_quad_clean.evt
Size (bytes)1,104,580,800298,028,160
Size1.0 GB 284.2 MB
Events in quadrant A10,053,2482,004,744
Events in quadrant B8,174,6622,032,586
Events in quadrant C10,131,6651,911,516
Events in quadrant D11,083,3551,789,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409073
B0377093
C0419513
D0463303

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18651610.327060%
B18651410.219827%
C186514432.375208%
D186516053.243794%

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 22890 18654 34 34 0.15% 0.18%
B 22890 18654 17 17 0.07% 0.09%
C 22890 18654 447 447 1.95% 2.40%
D 22890 18654 573 573 2.50% 3.07%

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 1444107 3458.26 2052 2011 417.0
A 12 189 508923 1215.62 2052 2011 417.0
A 2 79 149407 353.47 2052 2011 417.0
B 5 255 115288 289.32 2028 1970 391.7
B 0 229 66525 164.82 2028 1970 391.7
B 12 111 50422 123.7 2028 1970 391.7
C 14 254 1418889 3104.86 1977 1991 456.3
C 15 214 788160 1722.74 1977 1991 456.3
C 0 10 138784 299.75 1977 1991 456.3
D 13 249 2430004 5044.51 1986 1929 481.3
D 2 249 266679 550.04 1986 1929 481.3
D 12 233 193323 397.64 1986 1929 481.3

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