ASTROSAT CZTI

Data Quality Report

Orbit 26978

Creation date: 2024-06-27T19:35:11.035137
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_145T01_9000003900_26978cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26978cztM0_level2_quad_clean.evt
Size (bytes)580,705,92089,530,560
Size553.8 MB 85.4 MB
Events in quadrant A5,826,905543,059
Events in quadrant B3,344,934595,980
Events in quadrant C3,415,129573,333
Events in quadrant D4,569,736555,540

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216400
B0138600
C0141010
D0178230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A634779912.588625%
B6347370.582953%
C63471021.607058%
D63472574.049157%

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 7477 6347 516 516 6.90% 8.13%
B 7477 6347 2 2 0.03% 0.03%
C 7477 6348 14 14 0.19% 0.22%
D 7477 6347 191 191 2.55% 3.01%

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 14 235 2642425 16292.1 810 799 162.1
A 6 16 39335 237.67 810 799 162.1
A 8 192 13772 80.01 810 799 162.1
B 12 111 18629 111.67 847 830 159.4
B 11 111 16500 98.31 847 830 159.4
B 14 111 14298 84.5 847 830 159.4
C 14 238 131374 675.03 822 831 193.4
C 15 208 54335 276.66 822 831 193.4
C 2 16 24801 123.95 822 831 193.4
D 1 52 1111980 5743.96 815 797 193.5
D 2 250 173575 893.13 815 797 193.5
D 7 38 53229 271.03 815 797 193.5

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