ASTROSAT CZTI

Data Quality Report

Orbit 53591

Creation date: 2025-08-25T01:45:13.203077
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_004T05_9000006502_53591cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53591cztM0_level2_quad_clean.evt
Size (bytes)1,313,542,08066,735,360
Size1.2 GB 63.6 MB
Events in quadrant A16,614,574131,734
Events in quadrant B5,801,013728,086
Events in quadrant C13,140,099371,615
Events in quadrant D12,493,143269,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543940
B0223090
C0442100
D0422661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7451632884.928198%
B74514465.985774%
C7451382851.375654%
D7451443059.455107%

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 7451 7451 5437 5437 72.97% 72.97%
B 7451 7451 314 314 4.21% 4.21%
C 7451 7451 3039 3039 40.79% 40.79%
D 7450 7450 3586 3586 48.13% 48.13%

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 62 13941816 124516.9 447 436 112.0
A 15 174 248475 2215.35 447 436 112.0
A 3 63 227318 2026.39 447 436 112.0
B 4 206 712416 4307.5 777 751 165.2
B 5 172 634319 3834.8 777 751 165.2
B 0 171 303452 1832.16 777 751 165.2
C 15 224 6901870 42439.38 581 574 162.6
C 4 5 2217100 13630.48 581 574 162.6
C 15 178 636214 3908.85 581 574 162.6
D 8 176 9652158 81577.9 403 384 118.3
D 3 12 746210 6303.81 403 384 118.3
D 7 70 139437 1175.29 403 384 118.3

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