ASTROSAT CZTI

Data Quality Report

Orbit 57329

Creation date: 2026-05-03T15:45:50.232397
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_049T03_9000006570_57329cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57329cztM0_level2_quad_clean.evt
Size (bytes)1,590,243,840261,288,000
Size1.5 GB 249.2 MB
Events in quadrant A11,956,5071,775,028
Events in quadrant B9,210,1341,907,914
Events in quadrant C16,413,0231,510,001
Events in quadrant D19,797,9791,391,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0491512
B0414102
C0622922
D0720122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192485022.608063%
B192494682.431295%
C19249246912.826640%
D19249338817.600914%

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 20138 19250 177 177 0.88% 0.92%
B 20139 19251 83 83 0.41% 0.43%
C 20139 19251 1790 1790 8.89% 9.30%
D 20139 19250 2435 2435 12.09% 12.65%

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 12 3634138 7045.89 2090 2035 515.5
A 10 251 84240 159.47 2090 2035 515.5
A 11 14 42441 78.38 2090 2035 515.5
B 5 185 228750 514.1 2067 1984 441.1
B 7 252 210244 472.14 2067 1984 441.1
B 10 247 187076 419.62 2067 1984 441.1
C 15 224 7602639 14679.46 1927 1906 517.8
C 14 254 380141 730.49 1927 1906 517.8
C 12 252 346450 665.43 1927 1906 517.8
D 3 224 9321702 17466.14 1903 1819 533.6
D 2 249 911594 1704.98 1903 1819 533.6
D 8 240 819982 1533.3 1903 1819 533.6

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