ASTROSAT CZTI

Data Quality Report

Orbit 59211

Creation date: 2026-09-07T12:01:08.001932
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/AS1T05_271T01_9000006604_59211cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59211cztM0_level2_quad_clean.evt
Size (bytes)531,599,040108,135,360
Size507.0 MB 103.1 MB
Events in quadrant A4,077,667720,794
Events in quadrant B3,474,655779,896
Events in quadrant C3,994,754699,532
Events in quadrant D7,587,124586,189

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168862
B0152502
C0168072
D0276344

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70052273.240542%
B70062143.054525%
C70062082.968884%
D7005101814.532477%

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 9420 7007 121 121 1.28% 1.73%
B 9421 7008 27 27 0.29% 0.39%
C 9421 7008 103 103 1.09% 1.47%
D 9420 7007 761 761 8.08% 10.86%

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 10 251 350369 1757.59 807 785 198.9
A 0 24 222431 1114.36 807 785 198.9
A 3 14 190026 951.44 807 785 198.9
B 4 236 118257 679.22 807 776 173.0
B 10 247 45152 256.56 807 776 173.0
B 5 185 32550 183.7 807 776 173.0
C 15 147 641865 2923.92 803 794 219.3
C 14 254 70463 317.76 803 794 219.3
C 12 252 47059 211.01 803 794 219.3
D 12 110 3894584 18167.6 764 729 214.3
D 11 129 329656 1534.68 764 729 214.3
D 3 12 127998 593.8 764 729 214.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct