ASTROSAT CZTI

Data Quality Report

Orbit 32781

Creation date: 2024-06-27T20:41:56.492237
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/AS1T04_064T01_9000004730_32781cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32781cztM0_level2_quad_clean.evt
Size (bytes)1,029,237,12088,810,560
Size981.6 MB 84.7 MB
Events in quadrant A5,205,190559,639
Events in quadrant B5,438,948573,817
Events in quadrant C7,972,419515,079
Events in quadrant D12,010,577477,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208695
B0214992
C0289212
D0413192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80853784.675325%
B80853584.427953%
C8085152918.911565%
D8085165220.432900%

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 13466 8087 268 268 1.99% 3.31%
B 13466 8087 238 238 1.77% 2.94%
C 13466 8087 1221 1221 9.07% 15.10%
D 13466 8087 1637 1637 12.16% 20.24%

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 15 237 1190885 6514.02 907 891 182.7
A 12 16 263987 1440.19 907 891 182.7
A 10 228 65926 356.0 907 891 182.7
B 5 172 1015866 5783.76 927 905 175.5
B 0 219 301869 1715.05 927 905 175.5
B 5 236 117478 664.29 927 905 175.5
C 0 10 4175335 21803.55 827 834 191.5
C 4 254 254831 1326.63 827 834 191.5
C 3 233 114155 591.88 827 834 191.5
D 8 195 5254831 24719.09 820 807 212.5
D 2 250 1208286 5680.94 820 807 212.5
D 7 80 958713 4506.75 820 807 212.5

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