ASTROSAT CZTI

Data Quality Report

Orbit 44995

Creation date: 2024-06-27T23:08:50.846921
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_020T01_9000006040_44995cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_44995cztM0_level2_quad_clean.evt
Size (bytes)652,089,60096,001,920
Size621.9 MB 91.6 MB
Events in quadrant A10,096,169487,154
Events in quadrant B3,270,769733,462
Events in quadrant C3,172,941705,407
Events in quadrant D7,141,670568,770

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339151
B0133781
C0132311
D0252861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5897236640.122096%
B5896991.679104%
C5896871.475577%
D589693115.790366%

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 7112 5898 2169 2169 30.50% 36.78%
B 7111 5897 12 12 0.17% 0.20%
C 7111 5897 55 55 0.77% 0.93%
D 7111 5897 854 854 12.01% 14.48%

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 0 247 5024365 36908.65 661 647 136.1
A 10 83 2031778 14922.47 661 647 136.1
A 0 226 351959 2581.05 661 647 136.1
B 3 112 127976 928.86 708 690 137.0
B 5 255 67961 490.91 708 690 137.0
B 4 171 66031 476.82 708 690 137.0
C 1 3 177773 1082.7 701 706 163.5
C 14 254 78404 475.09 701 706 163.5
C 11 16 50766 306.1 701 706 163.5
D 11 241 3240209 19127.25 670 650 169.4
D 13 249 796320 4697.86 670 650 169.4
D 2 249 175393 1031.73 670 650 169.4

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