ASTROSAT CZTI

Data Quality Report

Orbit 56541

Creation date: 2026-03-11T14:16:32.566772
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_060T01_9000006556_56541cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56541cztM0_level2_quad_clean.evt
Size (bytes)573,940,800116,922,240
Size547.4 MB 111.5 MB
Events in quadrant A4,240,571774,842
Events in quadrant B7,338,020759,318
Events in quadrant C4,896,576735,732
Events in quadrant D4,128,194695,544

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185290
B0275210
C0204630
D0180611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8270700.846433%
B8270108313.095526%
C82702513.035067%
D8270340.411125%

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 8270 8270 47 47 0.57% 0.57%
B 8270 8270 480 480 5.80% 5.80%
C 8270 8270 256 256 3.10% 3.10%
D 8270 8270 30 30 0.36% 0.36%

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 95 232556 1023.53 915 891 226.3
A 10 251 203310 894.32 915 891 226.3
A 4 249 149653 657.25 915 891 226.3
B 5 185 2034196 10690.05 878 843 190.2
B 4 206 1565926 8228.19 878 843 190.2
B 4 171 127163 664.11 878 843 190.2
C 15 230 843516 3505.41 888 876 240.4
C 12 252 254370 1054.54 888 876 240.4
C 13 3 203532 843.06 888 876 240.4
D 3 12 147025 582.02 887 845 251.2
D 2 249 111422 440.27 887 845 251.2
D 2 31 76530 301.34 887 845 251.2

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