ASTROSAT CZTI

Data Quality Report

Orbit 46994

Creation date: 2024-06-27T23:30:28.262180
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/AS1C09_006T01_9000006294_46994cztM0_level2.fits modeM0/AS1C09_006T01_9000006294_46994cztM0_level2_quad_clean.evt
Size (bytes)783,515,52097,620,480
Size747.2 MB 93.1 MB
Events in quadrant A6,739,604737,383
Events in quadrant B13,246,042341,387
Events in quadrant C3,492,983741,030
Events in quadrant D4,992,557657,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244852
B0440312
C0151232
D0195603

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68672844.135722%
B6867444364.700743%
C68671261.834862%
D68664186.087970%

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 7897 6868 10 10 0.13% 0.15%
B 7897 6867 3606 3606 45.66% 52.51%
C 7896 6867 45 45 0.57% 0.66%
D 7895 6866 329 329 4.17% 4.79%

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 10 83 3610543 22020.08 785 768 163.9
A 9 191 77229 466.42 785 768 163.9
A 13 254 10386 58.67 785 768 163.9
B 3 112 10708899 86580.63 625 606 123.7
B 5 255 32146 255.01 625 606 123.7
B 0 198 17103 133.38 625 606 123.7
C 14 254 218972 1194.68 775 779 182.6
C 12 2 148771 810.3 775 779 182.6
C 15 208 41378 222.29 775 779 182.6
D 13 249 906687 4668.43 764 739 194.1
D 1 52 853908 4396.46 764 739 194.1
D 2 249 103514 529.61 764 739 194.1

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