ASTROSAT CZTI

Data Quality Report

Orbit 50658

Creation date: 2025-02-08T13:07:28.032917
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/AS1T05_241T01_9000006446_50658cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50658cztM0_level2_quad_clean.evt
Size (bytes)949,723,20099,097,920
Size905.7 MB 94.5 MB
Events in quadrant A4,888,446702,951
Events in quadrant B9,902,805703,843
Events in quadrant C13,402,114440,635
Events in quadrant D6,362,579612,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198950
B0348620
C0452190
D0246010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77781652.121368%
B7778108613.962458%
C7779317140.763594%
D77796418.240134%

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 7778 7778 128 128 1.65% 1.65%
B 7778 7778 642 642 8.25% 8.25%
C 7779 7779 2898 2898 37.25% 37.25%
D 7779 7779 565 565 7.26% 7.26%

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 4 4 666847 3359.9 805 785 198.2
A 8 246 161409 810.26 805 785 198.2
A 4 3 147104 738.1 805 785 198.2
B 5 172 4094182 24223.19 782 755 169.0
B 4 170 1583006 9363.1 782 755 169.0
B 4 206 238703 1408.08 782 755 169.0
C 15 174 3327983 18832.66 640 636 176.7
C 1 124 2354238 13321.3 640 636 176.7
C 15 1 1640967 9284.21 640 636 176.7
D 10 102 926766 4426.98 760 735 209.2
D 7 110 770271 3678.84 760 735 209.2
D 7 60 535182 2554.98 760 735 209.2

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