ASTROSAT CZTI

Data Quality Report

Orbit 27681

Creation date: 2024-06-27T19:42:56.865285
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_257T01_9000003976_27681cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27681cztM0_level2_quad_clean.evt
Size (bytes)599,342,40077,947,200
Size571.6 MB 74.3 MB
Events in quadrant A3,686,683475,530
Events in quadrant B3,762,987484,048
Events in quadrant C3,906,030460,727
Events in quadrant D6,269,331400,476

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160240
B0161150
C0164120
D0239580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77521752.257482%
B77532343.018187%
C77532302.966594%
D7753112814.549207%

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 7877 7752 0 0 0.00% 0.00%
B 7878 7753 0 0 0.00% 0.00%
C 7878 7753 15 15 0.19% 0.19%
D 7878 7753 849 849 10.78% 10.95%

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 15 174 15975 78.35 950 927 192.1
A 13 254 11681 55.99 950 927 192.1
A 3 137 9573 45.02 950 927 192.1
B 12 111 23458 122.34 947 919 184.2
B 0 230 22798 118.76 947 919 184.2
B 11 111 20758 107.69 947 919 184.2
C 3 233 176671 811.83 916 922 216.5
C 14 238 144195 661.82 916 922 216.5
C 15 208 6591 26.19 916 922 216.5
D 12 2 2199100 10237.24 886 862 214.7
D 1 52 609334 2833.67 886 862 214.7
D 2 250 77730 357.98 886 862 214.7

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