ASTROSAT CZTI

Data Quality Report

Orbit 59142

Creation date: 2026-09-02T13:44:10.370998
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_264T01_9000006602_59142cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59142cztM0_level2_quad_clean.evt
Size (bytes)906,010,56098,164,800
Size864.0 MB 93.6 MB
Events in quadrant A3,944,456756,649
Events in quadrant B4,338,234828,411
Events in quadrant C4,029,798761,118
Events in quadrant D20,581,58951,534

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178791
B0185711
C0179491
D0667684

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82721832.212282%
B82722873.469536%
C82721371.656190%
D8271778094.063596%

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 8534 8336 20 20 0.23% 0.24%
B 8534 8335 38 38 0.45% 0.46%
C 8534 8335 23 23 0.27% 0.28%
D 8533 8328 7291 7291 85.44% 87.55%

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 3 14 115159 496.28 942 915 230.2
A 10 251 98424 423.58 942 915 230.2
A 15 233 37756 160.04 942 915 230.2
B 4 236 187027 912.38 938 899 204.0
B 5 236 176820 862.34 938 899 204.0
B 5 185 108033 525.16 938 899 204.0
C 12 252 202467 796.53 929 922 253.0
C 14 254 87696 342.94 929 922 253.0
C 6 223 36801 141.8 929 922 253.0
D 12 1 17477738 229912.76 264 252 76.0
D 12 110 1892942 24897.95 264 252 76.0
D 6 239 61334 803.52 264 252 76.0

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