ASTROSAT CZTI

Data Quality Report

Orbit 31177

Creation date: 2024-06-27T20:24:19.522549
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/AS1A10_058T02_9000004510_31177cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31177cztM0_level2_quad_clean.evt
Size (bytes)583,712,64076,858,560
Size556.7 MB 73.3 MB
Events in quadrant A3,376,613487,675
Events in quadrant B5,253,800480,862
Events in quadrant C3,491,793460,334
Events in quadrant D5,125,622454,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137551
B0198661
C0141251
D0204572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365620.974077%
B63651612.529458%
C63651111.743912%
D6364891.398492%

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 7530 6366 2 2 0.03% 0.03%
B 7530 6366 17 17 0.23% 0.27%
C 7530 6366 3 3 0.04% 0.05%
D 7529 6365 31 31 0.41% 0.49%

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 12 96 29613 168.34 868 854 170.8
A 13 254 10551 56.76 868 854 170.8
A 3 137 8125 42.56 868 854 170.8
B 6 159 1711991 10719.46 841 822 159.6
B 4 80 136704 851.22 841 822 159.6
B 0 190 26181 158.86 841 822 159.6
C 14 238 139967 735.15 813 822 189.3
C 10 22 121919 639.8 813 822 189.3
C 0 10 26583 136.1 813 822 189.3
D 8 195 1787448 9094.26 832 811 196.5
D 12 233 63202 317.58 832 811 196.5
D 12 79 59740 299.96 832 811 196.5

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