ASTROSAT CZTI

Data Quality Report

Orbit 32050

Creation date: 2024-06-27T20:35:51.904908
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/AS1T04_046T01_9000004680_32050cztM0_level2.evt modeM0/AS1T04_046T01_9000004680_32050cztM0_level2_quad_clean.evt
Size (bytes)521,694,720109,195,200
Size497.5 MB 104.1 MB
Events in quadrant A3,052,001741,522
Events in quadrant B4,979,651728,655
Events in quadrant C3,283,849719,734
Events in quadrant D4,076,026696,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125281
B0189541
C0132531
D0159211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60251151.908714%
B60252143.551867%
C60251772.937759%
D60252313.834025%

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 6980 6025 0 0 0.00% 0.00%
B 6980 6025 47 47 0.67% 0.78%
C 6980 6025 2 2 0.03% 0.03%
D 6979 6024 131 131 1.88% 2.17%

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 11480 68.14 788 774 157.1
A 3 137 7497 42.79 788 774 157.1
A 0 226 6748 38.02 788 774 157.1
B 6 159 1612875 11197.24 765 746 144.0
B 5 172 190717 1319.47 765 746 144.0
B 10 245 71777 493.35 765 746 144.0
C 14 238 122900 708.02 747 754 172.5
C 3 233 97791 562.48 747 754 172.5
C 0 10 72377 415.16 747 754 172.5
D 8 195 674792 3729.18 759 740 180.8
D 12 227 437838 2418.24 759 740 180.8
D 2 120 35337 191.41 759 740 180.8

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