ASTROSAT CZTI

Data Quality Report

Orbit 50545

Creation date: 2025-02-01T00:07:48.631354
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_239T01_9000006444_50545cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50545cztM0_level2_quad_clean.evt
Size (bytes)2,772,898,560186,531,840
Size2.6 GB 177.9 MB
Events in quadrant A17,423,3661,444,062
Events in quadrant B13,494,1251,729,033
Events in quadrant C34,346,288618,613
Events in quadrant D35,957,553580,463

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0642432
B0527172
C01147146
D01194362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18487271014.658950%
B1848812987.020770%
C184871215465.743495%
D184871192864.521015%

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 19397 18488 1765 1765 9.10% 9.55%
B 19398 18489 769 769 3.96% 4.16%
C 19396 18488 9948 9948 51.29% 53.81%
D 19397 18488 11075 11075 57.10% 59.90%

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 4 249 3843916 8445.38 1835 1791 454.9
A 12 250 1918606 4213.35 1835 1791 454.9
A 4 156 1176009 2581.05 1835 1791 454.9
B 4 170 2892364 7076.82 1932 1866 408.4
B 0 229 375828 915.57 1932 1866 408.4
B 4 206 319616 777.95 1932 1866 408.4
C 15 178 5783642 16853.13 1205 1192 343.1
C 0 225 4162399 12127.97 1205 1192 343.1
C 15 157 3522313 10262.42 1205 1192 343.1
D 7 61 10961215 32279.75 1189 1146 339.5
D 15 184 9862682 29044.34 1189 1146 339.5
D 6 42 1497388 4406.75 1189 1146 339.5

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