ASTROSAT CZTI

Data Quality Report

Orbit 25824

Creation date: 2024-06-27T19:21:50.540519
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/AS1A07_068T01_9000003756_25824cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25824cztM0_level2_quad_clean.evt
Size (bytes)500,768,64094,872,960
Size477.6 MB 90.5 MB
Events in quadrant A3,263,615639,538
Events in quadrant B3,255,884646,330
Events in quadrant C3,149,204601,025
Events in quadrant D5,074,854551,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136040
B0135340
C0131960
D0192540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6224290.465938%
B6224550.883676%
C6224761.221080%
D62245649.061697%

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 7583 6223 0 0 0.00% 0.00%
B 7584 6225 3 3 0.04% 0.05%
C 7583 6224 0 0 0.00% 0.00%
D 7583 6224 597 597 7.87% 9.59%

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 99867 608.25 821 810 162.9
A 13 254 9404 52.77 821 810 162.9
A 3 137 7289 39.78 821 810 162.9
B 0 219 36802 235.87 812 796 152.6
B 12 111 18115 113.46 812 796 152.6
B 11 111 16401 102.23 812 796 152.6
C 14 238 125951 700.27 769 774 178.8
C 3 233 20922 112.71 769 774 178.8
C 13 61 5263 25.11 769 774 178.8
D 7 80 1891518 10506.12 749 730 180.0
D 1 52 168082 929.89 749 730 180.0
D 12 233 107132 591.22 749 730 180.0

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