ASTROSAT CZTI

Data Quality Report

Orbit 12877

Creation date: 2024-06-27T16:33:27.418701
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/AS1G08_041T01_9000001892_12877cztM0_level2.evt modeM0/AS1G08_041T01_9000001892_12877cztM0_level2_quad_clean.evt
Size (bytes)624,919,68087,258,240
Size596.0 MB 83.2 MB
Events in quadrant A3,222,094572,603
Events in quadrant B6,828,628501,053
Events in quadrant C3,033,942585,017
Events in quadrant D5,396,333525,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137742
B0247711
C0133371
D0205771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6565110.167555%
B6565133320.304646%
C656570.106626%
D65655207.920792%

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 7626 6567 4 4 0.05% 0.06%
B 7626 6567 961 961 12.60% 14.63%
C 7626 6567 0 0 0.00% 0.00%
D 7626 6567 451 451 5.91% 6.87%

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 12 189 46011 277.64 788 771 162.9
A 1 162 42835 258.15 788 771 162.9
A 15 174 35741 214.61 788 771 162.9
B 0 85 2093661 15616.9 703 685 134.0
B 4 239 1655868 12350.28 703 685 134.0
B 0 219 202778 1507.93 703 685 134.0
C 13 61 5680 26.94 778 782 181.8
C 3 202 1868 5.97 778 782 181.8
C -1 -1 -1 -1.0 778 782 181.8
D 1 52 2123233 11650.33 746 724 182.2
D 4 95 171351 936.56 746 724 182.2
D 8 195 142120 776.11 746 724 182.2

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