ASTROSAT CZTI

Data Quality Report

Orbit 25311

Creation date: 2024-06-27T19:16:12.041730
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_022T01_9000003702_25311cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25311cztM0_level2_quad_clean.evt
Size (bytes)677,105,28076,769,280
Size645.7 MB 73.2 MB
Events in quadrant A3,176,771551,670
Events in quadrant B3,400,233555,948
Events in quadrant C3,195,211530,668
Events in quadrant D10,272,895211,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137880
B0143670
C0138150
D0351470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6801230.338186%
B6801460.676371%
C6801540.794001%
D6801345450.786649%

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 7766 6802 0 0 0.00% 0.00%
B 7766 6802 7 7 0.09% 0.10%
C 7766 6802 0 0 0.00% 0.00%
D 7766 6801 3181 3181 40.96% 46.77%

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 10873 61.03 822 804 165.0
A 3 137 7441 40.23 822 804 165.0
A 0 226 7092 38.11 822 804 165.0
B 3 64 130355 833.14 817 797 155.5
B 0 190 40769 257.04 817 797 155.5
B 12 111 19228 118.52 817 797 155.5
C 14 238 124637 670.99 785 790 184.6
C 3 233 5849 27.41 785 790 184.6
C 13 61 5308 24.48 785 790 184.6
D 12 235 7707447 66995.72 470 456 115.0
D 7 38 211502 1834.59 470 456 115.0
D 12 251 182729 1584.47 470 456 115.0

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