ASTROSAT CZTI

Data Quality Report

Orbit 26142

Creation date: 2024-06-27T19:25:18.424112
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/AS1A09_138T04_9000003776_26142cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26142cztM0_level2_quad_clean.evt
Size (bytes)460,618,560103,066,560
Size439.3 MB 98.3 MB
Events in quadrant A3,326,326670,986
Events in quadrant B3,374,425694,457
Events in quadrant C3,426,666661,804
Events in quadrant D3,400,277660,209

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135190
B0137070
C0139250
D0137690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6219270.434153%
B6219691.109503%
C62191071.720534%
D6219470.755749%

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 7604 6220 0 0 0.00% 0.00%
B 7604 6220 0 0 0.00% 0.00%
C 7604 6219 2 2 0.03% 0.03%
D 7604 6220 27 27 0.36% 0.43%

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 26898 154.53 855 841 168.6
A 13 254 9440 51.0 855 841 168.6
A 0 226 7367 38.7 855 841 168.6
B 0 190 42897 264.85 849 830 158.8
B 12 111 18230 109.55 849 830 158.8
B 11 111 16480 98.53 849 830 158.8
C 14 238 133588 687.0 833 844 193.2
C 3 233 20130 99.81 833 844 193.2
C 2 16 16470 80.87 833 844 193.2
D 1 52 166156 828.67 848 829 199.5
D 2 234 22735 109.8 848 829 199.5
D 14 35 14450 68.27 848 829 199.5

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