ASTROSAT CZTI

Data Quality Report

Orbit 58463

Creation date: 2026-07-18T22:24:50.606284
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/AS1A14_044T04_9000006592_58463cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58463cztM0_level2_quad_clean.evt
Size (bytes)1,706,232,960241,441,920
Size1.6 GB 230.3 MB
Events in quadrant A10,314,6871,722,237
Events in quadrant B25,880,9151,170,135
Events in quadrant C13,286,7431,582,739
Events in quadrant D12,215,9571,533,432

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441933
B0897583
C0529527
D0494043

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188797944.205731%
B18880734238.887712%
C1887915408.157212%
D188799364.957890%

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 20014 18880 342 342 1.71% 1.81%
B 20015 18880 6679 6679 33.37% 35.38%
C 20013 18880 1255 1255 6.27% 6.65%
D 20014 18880 549 549 2.74% 2.91%

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 80 1239148 2366.11 2091 2030 522.8
A 10 17 556001 1059.52 2091 2030 522.8
A 13 248 101419 190.09 2091 2030 522.8
B 2 249 17611108 56927.45 1454 1400 309.3
B 5 172 1788622 5777.61 1454 1400 309.3
B 8 128 123393 394.37 1454 1400 309.3
C 5 10 3112281 5680.15 1992 1971 547.6
C 6 223 756606 1378.14 1992 1971 547.6
C 6 13 569837 1037.05 1992 1971 547.6
D 8 240 3193365 5614.12 2016 1927 568.5
D 3 12 238941 416.93 2016 1927 568.5
D 5 173 185167 322.34 2016 1927 568.5

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