ASTROSAT CZTI

Data Quality Report

Orbit 59097

Creation date: 2026-08-30T12:46:40.015865
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_004T02_9000006600_59097cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59097cztM0_level2_quad_clean.evt
Size (bytes)815,952,96086,402,880
Size778.2 MB 82.4 MB
Events in quadrant A3,448,895696,106
Events in quadrant B3,892,532731,165
Events in quadrant C3,341,969673,956
Events in quadrant D18,948,3983,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155843
B0168802
C0154632
D0611622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73461692.300572%
B73463034.124694%
C73461321.796896%
D7346731799.605227%

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 7781 7347 23 23 0.30% 0.31%
B 7781 7347 93 93 1.20% 1.27%
C 7781 7347 34 34 0.44% 0.46%
D 7781 7347 7043 7043 90.52% 95.86%

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 13 248 111899 550.58 824 803 201.8
A 10 251 44064 214.4 824 803 201.8
A 4 3 30095 145.17 824 803 201.8
B 10 128 305100 1718.4 812 779 177.1
B 5 185 123284 691.74 812 779 177.1
B 4 201 85909 480.7 812 779 177.1
C 12 252 128608 587.13 801 792 217.7
C 6 13 20729 91.58 801 792 217.7
C 14 254 20047 88.45 801 792 217.7
D 12 1 17862235 476530.34 125 119 37.5
D 2 62 131558 3506.57 125 119 37.5
D 6 239 92552 2465.95 125 119 37.5

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