ASTROSAT CZTI

Data Quality Report

Orbit 44950

Creation date: 2024-06-27T23:08:18.639222
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_017T02_9000006032_44950cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44950cztM0_level2_quad_clean.evt
Size (bytes)500,627,520105,819,840
Size477.4 MB 100.9 MB
Events in quadrant A5,144,486717,470
Events in quadrant B3,953,869734,029
Events in quadrant C3,398,274705,071
Events in quadrant D5,544,850606,569

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197831
B0158791
C0143691
D0207031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63181261.994302%
B63191963.101757%
C63191592.516221%
D631963510.049058%

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 7403 6319 12 12 0.16% 0.19%
B 7404 6320 74 74 1.00% 1.17%
C 7404 6320 115 115 1.55% 1.82%
D 7404 6320 492 492 6.65% 7.78%

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 2181890 14296.19 736 720 152.6
A 2 79 63279 410.03 736 720 152.6
A 13 248 18792 118.45 736 720 152.6
B 4 171 490884 3398.57 729 708 144.2
B 5 255 199581 1378.86 729 708 144.2
B 5 172 142901 985.88 729 708 144.2
C 15 208 474178 2782.05 722 727 170.2
C 5 4 33044 189.9 722 727 170.2
C 0 207 26683 152.52 722 727 170.2
D 5 235 705788 4037.06 702 684 174.7
D 13 249 562768 3218.2 702 684 174.7
D 5 171 238090 1359.26 702 684 174.7

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