ASTROSAT CZTI

Data Quality Report

Orbit 44835

Creation date: 2024-06-27T23:07:02.433991
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_017T01_9000006028_44835cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44835cztM0_level2_quad_clean.evt
Size (bytes)557,328,960116,956,800
Size531.5 MB 111.5 MB
Events in quadrant A5,316,643799,277
Events in quadrant B3,678,171831,574
Events in quadrant C3,734,124772,350
Events in quadrant D7,391,372678,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210902
B0153742
C0155502
D0266572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65862053.112663%
B65861592.414212%
C65872684.068620%
D658669310.522320%

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 7781 6587 8 8 0.10% 0.12%
B 7781 6587 50 50 0.64% 0.76%
C 7782 6588 162 162 2.08% 2.46%
D 7781 6587 554 554 7.12% 8.41%

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 2204231 13167.48 804 788 167.3
A 3 137 8558 46.43 804 788 167.3
A 13 254 7715 41.39 804 788 167.3
B 0 186 151752 962.36 800 776 156.9
B 0 155 111644 706.7 800 776 156.9
B 5 255 105827 669.62 800 776 156.9
C 3 233 497793 2701.83 791 796 183.9
C 14 254 55651 298.21 791 796 183.9
C 9 54 45812 244.72 791 796 183.9
D 13 187 2277622 11989.88 767 746 189.9
D 5 235 661483 3479.4 767 746 189.9
D 7 38 236883 1243.48 767 746 189.9

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