ASTROSAT CZTI

Data Quality Report

Orbit 24147

Creation date: 2024-06-27T19:02:45.320110
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/AS1A07_047T01_9000003572_24147cztM0_level2.evt modeM0/AS1A07_047T01_9000003572_24147cztM0_level2_quad_clean.evt
Size (bytes)451,728,000127,491,840
Size430.8 MB 121.6 MB
Events in quadrant A3,077,218875,915
Events in quadrant B3,175,137878,412
Events in quadrant C3,285,549827,023
Events in quadrant D3,695,277820,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134071
B0136131
C0140971
D0152651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6580620.942249%
B6581741.124449%
C65811522.309679%
D65811542.340070%

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 7115 6581 0 0 0.00% 0.00%
B 7116 6582 1 1 0.01% 0.02%
C 7116 6582 36 36 0.51% 0.55%
D 7116 6582 72 72 1.01% 1.09%

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 3 1 14722 88.38 792 776 157.8
A 13 254 10345 60.64 792 776 157.8
A 2 79 8345 47.97 792 776 157.8
B 0 189 66438 448.29 782 765 146.5
B 12 111 17355 113.25 782 765 146.5
B 11 111 15771 102.43 782 765 146.5
C 2 16 174805 1017.88 743 745 171.0
C 14 238 120703 701.5 743 745 171.0
C 0 207 68123 394.02 743 745 171.0
D 7 238 235757 1285.94 759 734 182.8
D 1 52 224206 1222.74 759 734 182.8
D 8 195 223309 1217.83 759 734 182.8

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