ASTROSAT CZTI

Data Quality Report

Orbit 53625

Creation date: 2025-08-27T09:20:12.614669
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_004T05_9000006502_53625cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53625cztM0_level2_quad_clean.evt
Size (bytes)1,001,102,400100,658,880
Size954.7 MB 96.0 MB
Events in quadrant A11,333,407571,858
Events in quadrant B6,495,703765,916
Events in quadrant C11,213,781532,745
Events in quadrant D7,398,740622,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391252
B0249862
C0388142
D0276222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7983240630.139045%
B79845827.289579%
C7984246430.861723%
D798493811.748497%

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 9487 7981 2448 2448 25.80% 30.67%
B 9488 7982 312 312 3.29% 3.91%
C 9488 7982 2436 2436 25.67% 30.52%
D 9488 7983 943 943 9.94% 11.81%

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 4053860 20871.31 786 766 194.2
A 3 78 2280492 11739.39 786 766 194.2
A 3 130 520051 2674.05 786 766 194.2
B 15 20 1990983 11055.95 837 808 180.0
B 4 206 515273 2857.99 837 808 180.0
B 5 172 170445 942.38 837 808 180.0
C 15 224 3288756 16776.41 709 703 196.0
C 1 241 2112084 10772.76 709 703 196.0
C 13 3 1786971 9113.95 709 703 196.0
D 8 176 2957098 12685.72 805 770 233.0
D 2 153 473129 2026.91 805 770 233.0
D 10 172 296221 1267.79 805 770 233.0

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