ASTROSAT CZTI

Data Quality Report

Orbit 20160813_G05_195T01_9000000598_level2

Creation date: 2025-11-04T19:34:05.717798
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/AS1G05_195T01_9000000598cztM0_level2.fits modeM0/AS1G05_195T01_9000000598cztM0_level2_quad_clean.evt
Size (bytes)617,728,320630,748,800
Size589.1 MB 601.5 MB
Events in quadrant A3,682,3423,731,060
Events in quadrant B3,541,2003,690,958
Events in quadrant C3,635,6143,641,577
Events in quadrant D3,108,0823,300,076

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014100
B014100
C014080
D014100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01418560
B01551580
C01525400
D01678220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A690997581.096977%
B6908716942.451981%
C6909414512.100038%
D6907621513.113961%

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 79879 69127 0 0 0.00% 0.00%
B 79879 69104 0 0 0.00% 0.00%
C 79879 69128 0 0 0.00% 0.00%
D 79879 69059 0 0 0.00% 0.00%

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 0 29 3726 11.44 956 889 248.0
A 14 188 3676 11.24 956 889 248.0
A 7 110 3160 9.16 956 889 248.0
B 2 9 3041 11.16 936 888 193.0
B 14 254 2564 8.68 936 888 193.0
B 12 226 2562 8.67 936 888 193.0
C 1 80 2711 7.15 958 883 255.6
C 1 81 2629 6.83 958 883 255.6
C 12 241 2513 6.38 958 883 255.6
D 11 82 2572 7.5 884 801 236.0
D 3 14 2362 6.61 884 801 236.0
D 4 160 2346 6.55 884 801 236.0

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