ASTROSAT CZTI

Data Quality Report

Orbit 31720

Creation date: 2024-06-27T20:31:55.205783
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_034T01_9000004632_31720cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31720cztM0_level2_quad_clean.evt
Size (bytes)813,035,520107,320,320
Size775.4 MB 102.3 MB
Events in quadrant A5,954,432685,771
Events in quadrant B8,425,841670,818
Events in quadrant C4,389,224694,690
Events in quadrant D5,330,035658,900

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229121
B0304721
C0180991
D0212292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A774986511.162731%
B7750112414.503226%
C77502783.587097%
D77494756.129823%

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 7764 7750 378 378 4.87% 4.88%
B 7765 7751 678 678 8.73% 8.75%
C 7765 7751 13 13 0.17% 0.17%
D 7764 7750 245 245 3.16% 3.16%

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 0 13 2360992 12423.24 929 910 190.0
A 13 254 14006 68.94 929 910 190.0
A 3 137 9786 46.72 929 910 190.0
B 4 80 2564396 14314.95 926 901 179.1
B 6 159 2084465 11634.94 926 901 179.1
B 5 172 54577 299.73 926 901 179.1
C 0 10 353966 1577.37 932 937 223.8
C 3 233 199054 885.21 932 937 223.8
C 14 238 149533 663.94 932 937 223.8
D 12 233 1130635 5151.65 915 890 219.3
D 8 195 514124 2340.35 915 890 219.3
D 12 227 183536 832.87 915 890 219.3

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