ASTROSAT CZTI

Data Quality Report

Orbit 29428

Creation date: 2024-06-27T20:04:03.128292
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_102T05_9000004232_29428cztM0_level2.evt modeM0/AS1A10_102T05_9000004232_29428cztM0_level2_quad_clean.evt
Size (bytes)705,006,72080,052,480
Size672.3 MB 76.3 MB
Events in quadrant A2,959,306534,056
Events in quadrant B3,026,302543,809
Events in quadrant C9,114,195466,119
Events in quadrant D5,873,413487,503

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118132
B0120642
C0309922
D0214942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5605711.266726%
B5606881.569747%
C5606198335.372815%
D56065018.936853%

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 6910 5607 0 0 0.00% 0.00%
B 6911 5608 2 2 0.03% 0.04%
C 6911 5608 1218 1218 17.62% 21.72%
D 6911 5608 431 431 6.24% 7.69%

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 13 254 10130 60.93 767 753 153.9
A 3 137 6901 39.95 767 753 153.9
A 0 226 6692 38.59 767 753 153.9
B 10 245 25984 179.92 751 736 140.3
B 0 190 22554 155.48 751 736 140.3
B 15 33 19438 133.27 751 736 140.3
C 3 233 6392893 41328.91 666 672 154.7
C 14 238 107140 688.37 666 672 154.7
C 2 114 12403 75.85 666 672 154.7
D 1 52 2272238 13361.78 718 701 170.0
D 8 195 561057 3296.16 718 701 170.0
D 13 104 122786 718.14 718 701 170.0

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