ASTROSAT CZTI

Data Quality Report

Orbit 31834

Creation date: 2024-06-27T20:33:19.076168
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/AS1A10_109T01_9000004646_31834cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31834cztM0_level2_quad_clean.evt
Size (bytes)592,254,720108,132,480
Size564.8 MB 103.1 MB
Events in quadrant A3,485,090721,878
Events in quadrant B5,497,441713,863
Events in quadrant C4,313,881675,951
Events in quadrant D4,164,279673,726

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147544
B0215693
C0172233
D0169353

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7022490.697807%
B70221321.879806%
C70223204.557106%
D70221381.965252%

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 7687 7024 0 0 0.00% 0.00%
B 7687 7024 13 13 0.17% 0.19%
C 7687 7024 95 95 1.24% 1.35%
D 7687 7024 90 90 1.17% 1.28%

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 13 254 13700 70.62 902 888 181.4
A 3 137 9001 44.72 902 888 181.4
A 0 226 7420 36.0 902 888 181.4
B 6 159 1810932 10618.51 886 864 170.5
B 0 229 113496 660.74 886 864 170.5
B 10 245 32729 186.93 886 864 170.5
C 0 10 463032 2309.5 851 860 200.1
C 3 233 333242 1660.93 851 860 200.1
C 14 238 150042 745.47 851 860 200.1
D 2 250 249059 1185.37 871 850 209.4
D 8 195 246564 1173.46 871 850 209.4
D 13 174 177030 841.38 871 850 209.4

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