ASTROSAT CZTI

Data Quality Report

Orbit 15546

Creation date: 2024-06-27T17:10:08.771746
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/AS1G08_030T01_9000002302_15546cztM0_level2.evt modeM0/AS1G08_030T01_9000002302_15546cztM0_level2_quad_clean.evt
Size (bytes)508,691,52088,421,760
Size485.1 MB 84.3 MB
Events in quadrant A3,494,623573,988
Events in quadrant B3,590,570575,112
Events in quadrant C3,513,186537,988
Events in quadrant D4,365,753536,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141443
B0145102
C0141752
D0169912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65051271.952344%
B65051412.167563%
C65051392.136818%
D65054697.209839%

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 7811 6506 0 0 0.00% 0.00%
B 7811 6506 2 2 0.03% 0.03%
C 7811 6506 2 2 0.03% 0.03%
D 7811 6506 345 345 4.42% 5.30%

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 0 226 8278 40.95 907 891 180.4
A 12 194 6798 32.74 907 891 180.4
A 3 137 5824 27.34 907 891 180.4
B 0 189 30213 172.41 894 874 170.2
B 0 214 24118 136.59 894 874 170.2
B 4 173 23639 133.78 894 874 170.2
C 14 238 132166 672.83 847 854 195.2
C 3 233 40207 201.64 847 854 195.2
C 10 22 22233 109.54 847 854 195.2
D 1 52 973860 4675.68 851 824 208.1
D 12 221 36294 170.44 851 824 208.1
D 13 104 33828 158.59 851 824 208.1

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