ASTROSAT CZTI

Data Quality Report

Orbit 48141

Creation date: 2024-08-23T11:43:25.689159
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_009T01_9000006406_48141cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48141cztM0_level2_quad_clean.evt
Size (bytes)543,617,28075,499,200
Size518.4 MB 72.0 MB
Events in quadrant A6,932,561714,861
Events in quadrant B1,069,647204
Events in quadrant C3,297,935700,472
Events in quadrant D8,348,443448,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247283
B065311
C0137691
D0288891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60342584.275771%
B6034603299.966854%
C60341682.784223%
D6034216835.929732%

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 7214 6035 68 68 0.94% 1.13%
B 7213 6017 1 1 0.01% 0.02%
C 7214 6035 115 115 1.59% 1.91%
D 7214 6034 1622 1622 22.48% 26.88%

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 4035978 26864.24 723 711 150.2
A 13 248 43804 286.89 723 711 150.2
A 13 6 23995 155.01 723 711 150.2
B 2 177 831507 73626.39 45 44 11.3
B 4 21 25915 2290.89 45 44 11.3
B 0 200 19898 1758.08 45 44 11.3
C 12 2 361976 2170.09 704 711 166.5
C 10 187 171910 1028.38 704 711 166.5
C 1 16 6216 33.07 704 711 166.5
D 12 2 5100183 34331.21 580 563 148.5
D 2 37 539588 3628.77 580 563 148.5
D 2 249 182595 1225.46 580 563 148.5

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