ASTROSAT CZTI

Data Quality Report

Orbit 47754

Creation date: 2024-07-27T20:21:48.991271
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_004T04_9000006346_47754cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47754cztM0_level2_quad_clean.evt
Size (bytes)528,742,080109,324,800
Size504.2 MB 104.3 MB
Events in quadrant A7,215,253726,744
Events in quadrant B3,827,258744,045
Events in quadrant C4,195,936682,111
Events in quadrant D3,790,129669,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265174
B0160861
C0176981
D0164121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70064326.166143%
B70072763.938918%
C70075858.348794%
D70073024.309976%

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 7091 7008 5 5 0.07% 0.07%
B 7092 7009 16 16 0.23% 0.23%
C 7092 7009 317 317 4.47% 4.52%
D 7092 7009 89 89 1.25% 1.27%

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 4056357 24716.49 789 772 164.1
A 13 248 46569 279.11 789 772 164.1
A 9 191 38853 232.08 789 772 164.1
B 0 200 240601 1536.99 786 761 156.0
B 0 190 109331 695.76 786 761 156.0
B 5 255 76514 485.46 786 761 156.0
C 12 2 1004385 5620.14 760 762 178.6
C 14 254 195813 1092.26 760 762 178.6
C 0 207 17765 95.21 760 762 178.6
D 2 37 335310 1679.01 793 767 199.2
D 1 232 92680 461.29 793 767 199.2
D 12 233 84270 419.09 793 767 199.2

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