ASTROSAT CZTI

Data Quality Report

Orbit 57513

Creation date: 2026-05-15T23:35:18.058369
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_113T09_9000006574_57513cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57513cztM0_level2_quad_clean.evt
Size (bytes)569,672,640100,105,920
Size543.3 MB 95.5 MB
Events in quadrant A3,290,934684,818
Events in quadrant B4,689,333707,964
Events in quadrant C6,677,919593,639
Events in quadrant D5,865,943540,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152291
B0187781
C0249871
D0224021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72501281.765517%
B72503945.434483%
C725088412.193103%
D7249105114.498552%

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 7470 7253 7 7 0.09% 0.10%
B 7470 7253 121 121 1.62% 1.67%
C 7470 7253 718 718 9.61% 9.90%
D 7469 7252 869 869 11.63% 11.98%

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 13 248 67028 342.85 790 770 193.3
A 3 14 58992 301.27 790 770 193.3
A 7 14 34393 173.98 790 770 193.3
B 4 206 1018233 6197.88 765 734 164.2
B 2 249 207739 1260.93 765 734 164.2
B 5 185 110720 669.96 765 734 164.2
C 15 224 1875742 9498.53 728 721 197.4
C 9 38 1556187 7879.72 728 721 197.4
C 14 254 166530 839.96 728 721 197.4
D 8 240 2336928 11858.06 699 665 197.0
D 12 128 423365 2145.48 699 665 197.0
D 3 12 75005 377.32 699 665 197.0

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