ASTROSAT CZTI

Data Quality Report

Orbit 55262

Creation date: 2025-12-15T13:12:42.096504
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_009T01_9000006534_55262cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55262cztM0_level2_quad_clean.evt
Size (bytes)469,235,520121,633,920
Size447.5 MB 116.0 MB
Events in quadrant A3,830,362785,200
Events in quadrant B4,046,635830,438
Events in quadrant C4,635,288757,569
Events in quadrant D4,193,929717,282

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180001
B0186351
C0201121
D0190451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8527470.551190%
B85272552.990501%
C85281491.747186%
D8527891.043743%

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 8542 8528 13 13 0.15% 0.15%
B 8542 8528 50 50 0.59% 0.59%
C 8543 8529 120 120 1.40% 1.41%
D 8542 8528 48 48 0.56% 0.56%

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 4 249 91275 401.47 917 893 225.1
A 0 8 50364 219.74 917 893 225.1
A 4 3 46811 203.96 917 893 225.1
B 5 185 399065 2032.85 907 873 195.9
B 10 247 36671 182.76 907 873 195.9
B 12 111 24299 119.59 907 873 195.9
C 10 22 286964 1159.89 899 890 246.6
C 13 3 285279 1153.06 899 890 246.6
C 12 252 164023 661.43 899 890 246.6
D 3 12 123852 493.66 893 855 249.2
D 7 96 120798 481.41 893 855 249.2
D 6 46 115415 459.8 893 855 249.2

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