ASTROSAT CZTI

Data Quality Report

Orbit 53967

Creation date: 2025-09-19T13:14:06.142487
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_057T04_9000006508_53967cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53967cztM0_level2_quad_clean.evt
Size (bytes)565,274,88099,290,880
Size539.1 MB 94.7 MB
Events in quadrant A3,808,352657,698
Events in quadrant B3,673,721707,171
Events in quadrant C5,635,673602,440
Events in quadrant D7,257,649545,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165412
B0161152
C0216407
D0265192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70782213.122351%
B70782112.981068%
C70775768.139042%
D707799714.087890%

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 7753 7079 132 132 1.70% 1.86%
B 7753 7079 64 64 0.83% 0.90%
C 7752 7078 523 523 6.75% 7.39%
D 7752 7078 846 846 10.91% 11.95%

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 15 174 429333 2252.96 769 751 190.2
A 7 14 117435 613.38 769 751 190.2
A 12 17 77367 402.75 769 751 190.2
B 5 185 145535 885.86 766 739 163.5
B 4 171 125096 760.82 766 739 163.5
B 0 213 113923 692.46 766 739 163.5
C 1 241 1635270 8049.57 735 729 203.1
C 9 38 646577 3180.58 735 729 203.1
C 12 249 97526 476.69 735 729 203.1
D 8 176 2741733 13685.87 707 678 200.3
D 6 239 681375 3398.67 707 678 200.3
D 2 165 294048 1464.77 707 678 200.3

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