ASTROSAT CZTI

Data Quality Report

Orbit 58994

Creation date: 2026-08-23T14:15:49.855745
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_004T07_9000006598_58994cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58994cztM0_level2_quad_clean.evt
Size (bytes)968,644,80061,856,640
Size923.8 MB 59.0 MB
Events in quadrant A3,784,605614,054
Events in quadrant B4,378,276635,871
Events in quadrant C14,493,77021,254
Events in quadrant D12,706,772158,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154471
B0173401
C0474026
D0421501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63512243.527004%
B63525328.375315%
C6351616096.992600%
D6351477075.106282%

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 7301 6351 87 87 1.19% 1.37%
B 7302 6352 278 278 3.81% 4.38%
C 7300 6350 5709 5709 78.21% 89.91%
D 7301 6351 4101 4101 56.17% 64.57%

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 14 238 453047 2568.45 722 703 176.1
A 0 24 340957 1931.99 722 703 176.1
A 3 14 137233 775.23 722 703 176.1
B 6 255 1327073 8849.53 696 672 149.9
B 8 234 76699 507.24 696 672 149.9
B 3 238 48084 316.33 696 672 149.9
C 15 219 13913108 373755.57 131 130 37.2
C 14 254 42624 1141.55 131 130 37.2
C 11 244 6211 163.36 131 130 37.2
D 12 110 10498495 77230.94 475 453 135.9
D 2 31 120061 879.92 475 453 135.9
D 11 129 112241 822.39 475 453 135.9

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