ASTROSAT CZTI

Data Quality Report

Orbit 33504

Creation date: 2024-06-27T20:49:33.199071
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/AS1A11_060T01_9000004804_33504cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33504cztM0_level2_quad_clean.evt
Size (bytes)1,303,084,800227,367,360
Size1.2 GB 216.8 MB
Events in quadrant A7,377,4931,481,490
Events in quadrant B9,048,7681,467,626
Events in quadrant C10,745,5991,434,838
Events in quadrant D11,198,1691,384,038

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326365
B0374134
C0423474
D0441994

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16220200.123305%
B162203302.034525%
C162203712.287300%
D162202461.516646%

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 21711 16224 0 0 0.00% 0.00%
B 21711 16224 229 229 1.05% 1.41%
C 21711 16223 363 363 1.67% 2.24%
D 21711 16224 216 216 0.99% 1.33%

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 13 254 24964 60.79 1903 1869 379.9
A 13 6 22613 54.6 1903 1869 379.9
A 3 137 19559 46.56 1903 1869 379.9
B 5 172 955816 2644.17 1880 1829 360.8
B 5 255 439838 1214.03 1880 1829 360.8
B 4 170 207950 571.31 1880 1829 360.8
C 4 254 1130617 2668.2 1834 1848 423.0
C 15 214 691412 1630.0 1834 1848 423.0
C 3 233 397173 934.48 1834 1848 423.0
D 8 195 2801348 6221.29 1836 1786 450.0
D 2 250 522415 1156.96 1836 1786 450.0
D 13 249 458001 1013.82 1836 1786 450.0

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