ASTROSAT CZTI

Data Quality Report

Orbit 56393

Creation date: 2026-03-01T15:17:32.542784
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_083T05_9000006554_56393cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56393cztM0_level2_quad_clean.evt
Size (bytes)1,045,630,08062,504,640
Size997.2 MB 59.6 MB
Events in quadrant A14,048,958227,006
Events in quadrant B6,647,801599,576
Events in quadrant C3,944,091597,335
Events in quadrant D13,546,8491,378

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462031
B0243151
C0165341
D0448213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6690451567.488789%
B6690110216.472347%
C66912463.676580%
D6690667999.835575%

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 7475 6691 4118 4118 55.09% 61.55%
B 7475 6690 698 698 9.34% 10.43%
C 7476 6692 133 133 1.78% 1.99%
D 7474 6689 3994 3994 53.44% 59.71%

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 12 3 7662609 68548.21 445 433 111.8
A 4 95 2288722 20471.75 445 433 111.8
A 12 194 932783 8341.09 445 433 111.8
B 4 206 1609004 11006.51 684 660 146.1
B 5 172 1599851 10943.88 684 660 146.1
B 5 185 298669 2039.39 684 660 146.1
C 13 3 602139 3173.93 699 694 189.5
C 12 254 216508 1138.89 699 694 189.5
C 15 230 190371 1000.96 699 694 189.5
D 8 129 12471345 450874.83 90 85 27.7
D 2 33 455020 16447.32 90 85 27.7
D 8 113 121689 4396.36 90 85 27.7

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