ASTROSAT CZTI

Data Quality Report

Orbit 50546

Creation date: 2025-02-01T00:58:06.235155
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_50546cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50546cztM0_level2_quad_clean.evt
Size (bytes)742,495,68088,395,840
Size708.1 MB 84.3 MB
Events in quadrant A4,922,699604,936
Events in quadrant B4,027,681690,325
Events in quadrant C10,017,361414,294
Events in quadrant D7,985,364487,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192632
B0168192
C0344672
D0284982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68654306.263656%
B68661361.980775%
C6866257637.518206%
D6865121317.669337%

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 7715 6866 369 369 4.78% 5.37%
B 7716 6867 90 90 1.17% 1.31%
C 7716 6866 2008 2008 26.02% 29.25%
D 7715 6866 1192 1192 15.45% 17.36%

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 3 130 1027818 5830.92 705 687 176.2
A 12 250 333607 1889.95 705 687 176.2
A 3 14 230473 1304.47 705 687 176.2
B 5 172 278911 1802.98 721 697 154.3
B 7 0 246551 1593.27 721 697 154.3
B 0 229 96864 623.22 721 697 154.3
C 15 178 2503210 15163.56 594 591 165.0
C 15 157 1169217 7080.79 594 591 165.0
C 15 213 902134 5462.52 594 591 165.0
D 15 184 1667238 9357.31 649 629 178.1
D 8 246 1425073 7997.66 649 629 178.1
D 6 42 544327 3052.64 649 629 178.1

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