ASTROSAT CZTI

Data Quality Report

Orbit 14931

Creation date: 2024-06-27T17:01:27.820325
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_055T01_9000002206_14931cztM0_level2.evt modeM0/AS1T02_055T01_9000002206_14931cztM0_level2_quad_clean.evt
Size (bytes)1,385,061,120272,615,040
Size1.3 GB 260.0 MB
Events in quadrant A8,824,5051,782,135
Events in quadrant B13,790,6031,720,926
Events in quadrant C8,877,2731,727,974
Events in quadrant D9,171,4131,718,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390975
B0541844
C0389094
D0412154

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18991890.468643%
B1899112776.724238%
C189911000.526565%
D189911220.642410%

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 21247 18997 1 1 0.00% 0.01%
B 21247 18996 739 739 3.48% 3.89%
C 21247 18997 1 1 0.00% 0.01%
D 21247 18997 27 27 0.13% 0.14%

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 12 189 137841 301.25 2231 2182 450.3
A 1 162 35116 73.14 2231 2182 450.3
A 9 143 21381 42.63 2231 2182 450.3
B 10 16 3941803 9615.96 2161 2103 409.7
B 0 219 818173 1991.85 2161 2103 409.7
B 0 189 186934 451.13 2161 2103 409.7
C 3 233 462129 926.99 2153 2159 496.2
C 13 61 15592 27.07 2153 2159 496.2
C 8 128 12735 21.31 2153 2159 496.2
D 7 254 670216 1316.37 2154 2100 507.5
D 13 249 118907 230.14 2154 2100 507.5
D 2 120 67727 129.3 2154 2100 507.5

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