ASTROSAT CZTI

Data Quality Report

Orbit 47774

Creation date: 2024-07-29T05:52:40.191253
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_004T02_9000006348_47774cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47774cztM0_level2_quad_clean.evt
Size (bytes)1,297,935,360281,543,040
Size1.2 GB 268.5 MB
Events in quadrant A18,765,4821,857,831
Events in quadrant B8,862,2441,899,243
Events in quadrant C8,520,4951,830,698
Events in quadrant D10,497,3581,686,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0674263
B0394333
C0390603
D0444313

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181216033.327631%
B181221981.092595%
C181221800.993268%
D181224212.323143%

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 19916 18124 145 145 0.73% 0.80%
B 19917 18125 63 63 0.32% 0.35%
C 19917 18125 105 105 0.53% 0.58%
D 19917 18125 264 264 1.33% 1.46%

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 10991269 27106.28 1946 1906 405.4
A 15 174 118807 288.35 1946 1906 405.4
A 13 6 70763 169.84 1946 1906 405.4
B 0 186 288492 753.65 1955 1893 380.3
B 5 32 220905 575.92 1955 1893 380.3
B 5 255 120322 311.43 1955 1893 380.3
C 12 2 496299 1094.23 1926 1930 451.8
C 14 254 369889 814.44 1926 1930 451.8
C 1 3 93633 202.97 1926 1930 451.8
D 2 165 1180448 2472.19 1916 1855 476.7
D 2 249 485237 1013.93 1916 1855 476.7
D 7 67 238291 495.94 1916 1855 476.7

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