ASTROSAT CZTI

Data Quality Report

Orbit 50677

Creation date: 2025-02-09T20:13:47.956121
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/AS1T05_241T01_9000006446_50677cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50677cztM0_level2_quad_clean.evt
Size (bytes)496,987,20093,490,560
Size474.0 MB 89.2 MB
Events in quadrant A3,779,538614,227
Events in quadrant B4,247,848665,498
Events in quadrant C5,702,317539,829
Events in quadrant D4,152,067549,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154921
B0172752
C0215011
D0169061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66311582.382748%
B66302033.061840%
C663080612.156863%
D66302573.876320%

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 7446 6631 99 99 1.33% 1.49%
B 7445 6630 112 112 1.50% 1.69%
C 7445 6630 705 705 9.47% 10.63%
D 7445 6630 211 211 2.83% 3.18%

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 9 191 176847 1022.33 699 681 172.3
A 4 3 154582 893.12 699 681 172.3
A 8 38 104359 601.67 699 681 172.3
B 0 229 829767 5629.9 692 666 147.3
B 8 128 135084 912.75 692 666 147.3
B 10 60 70681 475.43 692 666 147.3
C 1 44 1571029 8765.28 648 643 179.2
C 15 174 386851 2155.66 648 643 179.2
C 13 113 209812 1167.5 648 643 179.2
D 2 249 520966 2784.32 676 653 186.9
D 8 246 245300 1309.16 676 653 186.9
D 15 185 111260 591.88 676 653 186.9

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