ASTROSAT CZTI

Data Quality Report

Orbit 27309

Creation date: 2024-06-27T19:38:43.804470
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/AS1T03_255T01_9000003922_27309cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27309cztM0_level2_quad_clean.evt
Size (bytes)549,780,48077,256,000
Size524.3 MB 73.7 MB
Events in quadrant A3,377,266484,750
Events in quadrant B3,497,004487,897
Events in quadrant C3,446,926461,387
Events in quadrant D5,864,155427,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141470
B0144720
C0144780
D0220030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6851510.744417%
B6851711.036345%
C68511261.839148%
D68515678.276164%

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 7816 6851 0 0 0.00% 0.00%
B 7816 6851 2 2 0.03% 0.03%
C 7816 6851 10 10 0.13% 0.15%
D 7816 6851 555 555 7.10% 8.10%

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 11326 59.84 874 857 174.9
A 3 137 8214 42.05 874 857 174.9
A 0 226 7553 38.28 874 857 174.9
B 0 190 28056 162.49 868 848 167.4
B 0 229 23339 134.32 868 848 167.4
B 12 111 20317 116.27 868 848 167.4
C 14 238 137082 700.32 826 831 194.6
C 2 16 80091 407.39 826 831 194.6
C 10 22 6945 31.43 826 831 194.6
D 1 52 2605474 13193.27 810 791 197.4
D 12 233 107230 539.13 810 791 197.4
D 2 250 69424 347.64 810 791 197.4

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