ASTROSAT CZTI

Data Quality Report

Orbit 20240212_A13_073T04_9000006066_level2

Creation date: 2024-02-15T10:49:43.539004
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/AS1A13_073T04_9000006066cztM0_level2.fits modeM0/AS1A13_073T04_9000006066cztM0_level2_quad_clean.evt
Size (bytes)638,069,760635,857,920
Size608.5 MB 606.4 MB
Events in quadrant A3,735,7703,648,875
Events in quadrant B3,669,7923,769,414
Events in quadrant C3,780,0483,633,216
Events in quadrant D3,200,9343,270,435

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014580
B014580
C014580
D014580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02279930
B01556810
C01597220
D01953730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7196417912.488744%
B7196513341.853679%
C7196612971.802240%
D7196630784.277020%

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 97188 71955 0 0 0.00% 0.00%
B 97187 71952 0 0 0.00% 0.00%
C 97187 71944 0 0 0.00% 0.00%
D 97187 71923 0 0 0.00% 0.00%

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 7 110 3124 8.8 972 905 252.2
A 15 236 3037 8.45 972 905 252.2
A 7 109 2873 7.8 972 905 252.2
B 2 9 3416 12.89 967 919 193.7
B 2 8 2679 9.08 967 919 193.7
B 3 17 2656 8.96 967 919 193.7
C 3 202 2941 7.67 999 926 262.8
C 1 81 2892 7.48 999 926 262.8
C 3 203 2837 7.27 999 926 262.8
D 3 14 2376 5.98 919 834 257.7
D 10 189 2334 5.82 919 834 257.7
D 6 79 2295 5.67 919 834 257.7

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