ASTROSAT CZTI

Data Quality Report

Orbit 48101

Creation date: 2024-08-20T14:56:28.057642
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_48101cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_48101cztM0_level2_quad_clean.evt
Size (bytes)430,565,76087,822,720
Size410.6 MB 83.8 MB
Events in quadrant A7,345,892732,056
Events in quadrant B1,231,95446,884
Events in quadrant C3,035,416734,025
Events in quadrant D3,779,633661,146

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264014
B075132
C0142662
D0164962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69094206.079027%
B69096909100.000000%
C6909330.477638%
D69092183.155305%

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 7739 6910 120 120 1.55% 1.74%
B 7738 6884 2 2 0.03% 0.03%
C 7739 6910 6 6 0.08% 0.09%
D 7739 6910 119 119 1.54% 1.72%

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 4310777 27260.02 750 734 158.1
A 14 248 63890 399.45 750 734 158.1
A 13 248 49545 308.72 750 734 158.1
B 2 177 951740 78994.37 50 48 12.0
B 5 32 28915 2396.08 50 48 12.0
B 0 200 23549 1950.68 50 48 12.0
C 14 254 42744 237.12 753 756 177.1
C 12 250 23470 128.28 753 756 177.1
C 12 2 15080 80.89 753 756 177.1
D 2 165 393912 2135.07 735 711 184.2
D 2 249 272267 1474.54 735 711 184.2
D 11 224 149466 807.73 735 711 184.2

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