ASTROSAT CZTI

Data Quality Report

Orbit 08701

Creation date: 2024-06-27T15:36:08.981658
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/AS1A03_052T01_9000001208_08701cztM0_level2.evt modeM0/AS1A03_052T01_9000001208_08701cztM0_level2_quad_clean.evt
Size (bytes)521,847,36092,494,080
Size497.7 MB 88.2 MB
Events in quadrant A3,779,972560,793
Events in quadrant B4,111,036580,453
Events in quadrant C3,619,920578,240
Events in quadrant D3,775,407550,935

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162383
B0173642
C0158632
D0164322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7622580.760955%
B76222022.650223%
C7622510.669116%
D7622510.669116%

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 9667 7624 0 0 0.00% 0.00%
B 9667 7623 47 47 0.49% 0.62%
C 9667 7622 2 2 0.02% 0.03%
D 9667 7624 20 20 0.21% 0.26%

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 13 251 149410 776.34 929 908 191.3
A 15 174 50643 260.01 929 908 191.3
A 0 226 8735 40.92 929 908 191.3
B 10 16 357601 1961.57 940 916 181.8
B 4 173 60299 326.57 940 916 181.8
B 12 111 19019 99.56 940 916 181.8
C 14 225 12177 52.08 922 927 216.0
C 14 67 7962 32.57 922 927 216.0
C 13 61 6959 27.92 922 927 216.0
D 1 52 120741 513.75 909 887 233.3
D 9 64 69288 293.2 909 887 233.3
D 2 152 66721 282.2 909 887 233.3

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