ASTROSAT CZTI

Data Quality Report

Orbit 59201

Creation date: 2026-09-07T11:39:08.289371
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_59201cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59201cztM0_level2_quad_clean.evt
Size (bytes)581,356,800117,178,560
Size554.4 MB 111.8 MB
Events in quadrant A4,048,729770,707
Events in quadrant B4,168,444824,007
Events in quadrant C4,433,951738,726
Events in quadrant D8,242,022652,539

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178720
B0181870
C0190461
D0301600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8084540.667986%
B80841231.521524%
C8083540.668069%
D80847359.092034%

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 8084 8084 48 48 0.59% 0.59%
B 8084 8084 66 66 0.82% 0.82%
C 8083 8083 46 46 0.57% 0.57%
D 8084 8084 729 729 9.02% 9.02%

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 0 24 389250 1789.75 877 853 217.0
A 10 251 225195 1033.78 877 853 217.0
A 15 233 17105 74.89 877 853 217.0
B 0 186 227060 1204.4 870 838 187.8
B 10 247 216060 1145.83 870 838 187.8
B 4 201 185947 985.51 870 838 187.8
C 3 233 613254 2613.54 856 850 234.3
C 12 252 194216 825.22 856 850 234.3
C 15 147 167274 710.24 856 850 234.3
D 12 110 4343847 18674.77 828 790 232.6
D 11 129 339057 1454.52 828 790 232.6
D 8 240 88357 376.53 828 790 232.6

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