ASTROSAT CZTI

Data Quality Report

Orbit 57886

Creation date: 2026-06-10T01:09:08.807737
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_125T11_9000006582_57886cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57886cztM0_level2_quad_clean.evt
Size (bytes)418,104,00095,987,520
Size398.7 MB 91.5 MB
Events in quadrant A2,877,111647,115
Events in quadrant B3,208,981686,197
Events in quadrant C5,294,896557,029
Events in quadrant D3,596,229568,785

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132262
B0141372
C0201642
D0149463

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6421180.280330%
B6421651.012303%
C642167010.434512%
D64201221.900312%

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 7541 6422 9 9 0.12% 0.14%
B 7541 6422 32 32 0.42% 0.50%
C 7541 6422 520 520 6.90% 8.10%
D 7540 6421 94 94 1.25% 1.46%

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 7 64 93121 539.87 697 680 171.2
A 8 9 53443 308.14 697 680 171.2
A 10 251 15016 83.72 697 680 171.2
B 10 247 78866 534.63 687 661 146.3
B 0 63 76180 516.27 687 661 146.3
B 7 252 65636 444.19 687 661 146.3
C 2 12 1510623 8699.86 636 631 173.6
C 15 224 1090697 6280.45 636 631 173.6
C 14 254 66753 380.96 636 631 173.6
D 8 240 456778 2426.75 661 631 188.0
D 12 110 198811 1054.34 661 631 188.0
D 2 62 73637 388.4 661 631 188.0

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