ASTROSAT CZTI

Data Quality Report

Orbit 47827

Creation date: 2024-08-01T18:50:33.551954
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/AS1A13_081T01_9000006354_47827cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47827cztM0_level2_quad_clean.evt
Size (bytes)586,630,080109,644,480
Size559.5 MB 104.6 MB
Events in quadrant A7,196,423747,198
Events in quadrant B3,695,054755,895
Events in quadrant C3,994,533695,246
Events in quadrant D6,282,217629,389

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264251
B0159880
C0174000
D0237040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70612082.945758%
B70621191.685075%
C70623284.644577%
D70626328.949306%

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 7061 7061 16 16 0.23% 0.23%
B 7062 7062 56 56 0.79% 0.79%
C 7062 7062 291 291 4.12% 4.12%
D 7062 7062 613 613 8.68% 8.68%

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 10 83 3760421 23995.96 757 741 156.7
A 0 31 498217 3175.11 757 741 156.7
A 3 7 8809 51.49 757 741 156.7
B 0 200 308345 2090.01 749 725 147.2
B 0 186 120842 816.09 749 725 147.2
B 10 7 88021 593.1 749 725 147.2
C 12 2 1119783 6532.69 727 730 171.3
C 12 249 15865 88.35 727 730 171.3
C 14 254 15825 88.12 727 730 171.3
D 12 33 1333287 7364.12 721 696 181.0
D 12 2 1289611 7122.76 721 696 181.0
D 2 249 381589 2104.88 721 696 181.0

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