ASTROSAT CZTI

Data Quality Report

Orbit 55469

Creation date: 2025-12-30T15:41:28.374305
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_099T01_9000006536_55469cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55469cztM0_level2_quad_clean.evt
Size (bytes)1,263,271,680276,949,440
Size1.2 GB 264.1 MB
Events in quadrant A11,163,0771,796,457
Events in quadrant B10,472,2161,936,660
Events in quadrant C10,278,8811,725,841
Events in quadrant D13,309,1461,557,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0474840
B0455660
C0457300
D0541970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198695462.747999%
B198664632.330615%
C198705042.536487%
D1987011966.019124%

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 20909 19871 466 466 2.23% 2.35%
B 20909 19868 157 157 0.75% 0.79%
C 20910 19872 399 399 1.91% 2.01%
D 20910 19871 1067 1067 5.10% 5.37%

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 3 78 1641925 3191.15 2078 2024 513.9
A 0 8 460187 891.56 2078 2024 513.9
A 3 14 298367 576.67 2078 2024 513.9
B 5 172 1135912 2580.4 2071 1989 439.4
B 0 171 362417 820.2 2071 1989 439.4
B 10 247 293855 664.18 2071 1989 439.4
C 13 3 765121 1377.16 2034 2012 554.1
C 12 252 550926 990.61 2034 2012 554.1
C 9 38 508768 914.53 2034 2012 554.1
D 15 58 1097719 1938.85 2002 1914 565.2
D 11 129 830328 1465.75 2002 1914 565.2
D 8 160 818421 1444.68 2002 1914 565.2

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