ASTROSAT CZTI

Data Quality Report

Orbit 29888

Creation date: 2024-06-27T20:08:45.903877
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_102T12_9000004284_29888cztM0_level2.evt modeM0/AS1A10_102T12_9000004284_29888cztM0_level2_quad_clean.evt
Size (bytes)615,323,52076,360,320
Size586.8 MB 72.8 MB
Events in quadrant A3,502,333476,079
Events in quadrant B5,305,379475,789
Events in quadrant C4,776,067455,945
Events in quadrant D4,607,327446,007

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144352
B0202002
C0188102
D0181902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6577931.414019%
B65771211.839745%
C65772403.649080%
D65761322.007299%

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 7702 6578 7 7 0.09% 0.11%
B 7702 6578 0 0 0.00% 0.00%
C 7702 6578 51 51 0.66% 0.78%
D 7701 6577 41 41 0.53% 0.62%

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 8 192 27832 152.15 894 879 177.1
A 15 174 21775 117.96 894 879 177.1
A 13 254 11805 61.68 894 879 177.1
B 6 159 1822299 10957.92 873 852 166.2
B 0 229 46780 276.31 873 852 166.2
B 12 111 20438 117.83 873 852 166.2
C 3 233 825842 4244.75 838 846 194.4
C 10 22 536446 2755.76 838 846 194.4
C 14 238 135682 693.75 838 846 194.4
D 8 195 442986 2220.32 852 833 199.1
D 7 238 416898 2089.32 852 833 199.1
D 13 104 191895 959.44 852 833 199.1

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