ASTROSAT CZTI

Data Quality Report

Orbit 53418

Creation date: 2025-08-14T11:37:49.987578
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/AS1C09_011T09_9000006494_53418cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53418cztM0_level2_quad_clean.evt
Size (bytes)982,520,640107,248,320
Size937.0 MB 102.3 MB
Events in quadrant A5,317,993796,892
Events in quadrant B10,337,147675,450
Events in quadrant C14,021,623461,730
Events in quadrant D6,031,907719,043

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219970
B0366140
C0475580
D0239740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85502492.912281%
B8550219025.614035%
C8550386945.251462%
D85512583.017191%

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 8550 8550 186 186 2.18% 2.18%
B 8550 8550 1616 1616 18.90% 18.90%
C 8550 8550 3623 3623 42.37% 42.37%
D 8551 8551 231 231 2.70% 2.70%

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 15 174 643328 2884.58 899 875 222.7
A 3 63 629112 2820.75 899 875 222.7
A 7 206 156592 699.16 899 875 222.7
B 4 206 5832334 33808.8 812 785 172.5
B 10 28 353169 2042.97 812 785 172.5
B 4 171 279872 1618.03 812 785 172.5
C 1 241 5701363 29911.01 699 693 190.6
C 15 224 4795166 25156.26 699 693 190.6
C 4 5 163180 852.56 699 693 190.6
D 0 18 1029390 4156.4 874 833 247.5
D 4 234 305242 1230.12 874 833 247.5
D 2 153 246556 992.97 874 833 247.5

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