ASTROSAT CZTI

Data Quality Report

Orbit 54337

Creation date: 2025-10-14T07:07:07.511854
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_126T15_9000006516_54337cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54337cztM0_level2_quad_clean.evt
Size (bytes)773,400,96090,596,160
Size737.6 MB 86.4 MB
Events in quadrant A3,372,330684,611
Events in quadrant B3,809,261721,981
Events in quadrant C6,233,153549,495
Events in quadrant D14,653,712283,727

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154882
B0163952
C0239092
D0482432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7221590.817061%
B72211251.731062%
C7222122016.892827%
D7222424858.820271%

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 8736 7223 26 26 0.30% 0.36%
B 8736 7223 40 40 0.46% 0.55%
C 8737 7224 1141 1141 13.06% 15.79%
D 8736 7223 4199 4199 48.07% 58.13%

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 7 14 137461 729.63 760 743 187.4
A 5 243 93077 492.76 760 743 187.4
A 12 115 59786 315.1 760 743 187.4
B 4 171 290511 1797.67 755 728 161.2
B 7 0 183576 1134.3 755 728 161.2
B 0 171 105006 646.89 755 728 161.2
C 1 241 3163935 16562.97 694 687 191.0
C 14 254 121673 633.49 694 687 191.0
C 15 147 112520 585.56 694 687 191.0
D 15 108 9475148 68416.88 485 462 138.5
D 8 176 2020641 14587.75 485 462 138.5
D 3 12 826550 5965.2 485 462 138.5

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