ASTROSAT CZTI

Data Quality Report

Orbit 59219

Creation date: 2026-09-07T18:52:29.017706
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_271T01_9000006604_59219cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59219cztM0_level2_quad_clean.evt
Size (bytes)1,580,088,960262,419,840
Size1.5 GB 250.3 MB
Events in quadrant A13,967,4291,586,674
Events in quadrant B8,967,1481,912,752
Events in quadrant C11,758,6921,644,183
Events in quadrant D22,319,1491,483,447

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550933
B0404003
C0484503
D0797913

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19143234012.223789%
B191445032.627455%
C1914410635.552654%
D19082193910.161409%

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 20478 19144 1698 1698 8.29% 8.87%
B 20479 19146 54 54 0.26% 0.28%
C 20479 19146 706 706 3.45% 3.69%
D 20479 19085 1483 1483 7.24% 7.77%

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 15 233 3528991 7048.59 2053 1994 500.4
A 14 238 1610746 3215.04 2053 1994 500.4
A 10 251 675487 1345.95 2053 1994 500.4
B 5 248 118959 258.53 2108 2020 452.3
B 10 247 99689 215.93 2108 2020 452.3
B 4 201 96994 209.97 2108 2020 452.3
C 15 147 1586586 2839.84 2052 2034 558.0
C 12 252 960292 1717.4 2052 2034 558.0
C 6 223 860401 1538.37 2052 2034 558.0
D 12 110 12024094 21509.05 2011 1922 558.9
D 11 129 1401997 2504.89 2011 1922 558.9
D 8 240 296756 527.49 2011 1922 558.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct