ASTROSAT CZTI

Data Quality Report

Orbit 31122

Creation date: 2024-06-27T20:23:38.175193
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/AS1A10_109T01_9000004492_31122cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31122cztM0_level2_quad_clean.evt
Size (bytes)548,876,160118,477,440
Size523.4 MB 113.0 MB
Events in quadrant A3,457,496802,687
Events in quadrant B5,222,125804,918
Events in quadrant C3,751,711784,425
Events in quadrant D3,771,897763,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143082
B0192942
C0153082
D0154702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6199590.951766%
B61991542.484272%
C61992433.919987%
D6199921.484110%

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 7549 6201 0 0 0.00% 0.00%
B 7549 6201 3 3 0.04% 0.05%
C 7549 6201 38 38 0.50% 0.61%
D 7549 6201 31 31 0.41% 0.50%

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 11143 58.45 894 881 175.6
A 8 144 8803 45.12 894 881 175.6
A 3 137 8247 41.96 894 881 175.6
B 6 159 1700070 10303.63 883 865 164.9
B 0 183 32916 194.35 883 865 164.9
B 12 111 19304 111.81 883 865 164.9
C 0 10 176066 884.1 866 879 198.2
C 14 238 142609 715.26 866 879 198.2
C 10 22 19905 96.02 866 879 198.2
D 8 195 306204 1494.52 878 861 204.3
D 2 120 102758 498.74 878 861 204.3
D 13 174 24217 114.32 878 861 204.3

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