ASTROSAT CZTI

Data Quality Report

Orbit 24424

Creation date: 2024-06-27T19:05:54.301278
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_054T01_9000003604_24424cztM0_level2.evt modeM0/AS1A07_054T01_9000003604_24424cztM0_level2_quad_clean.evt
Size (bytes)577,748,160127,123,200
Size551.0 MB 121.2 MB
Events in quadrant A3,182,026865,826
Events in quadrant B3,483,601875,751
Events in quadrant C3,181,662851,032
Events in quadrant D7,176,111770,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142881
B0150261
C0141692
D0262231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6986881.259662%
B69872082.976957%
C6986821.173776%
D698691113.040366%

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 7251 6987 6 6 0.08% 0.09%
B 7252 6988 71 71 0.98% 1.02%
C 7251 6987 0 0 0.00% 0.00%
D 7251 6987 811 811 11.18% 11.61%

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 4 2 54997 330.82 811 794 163.8
A 13 254 11030 62.47 811 794 163.8
A 3 137 7279 39.58 811 794 163.8
B 3 64 301280 1945.93 808 785 154.4
B 12 111 18964 117.72 808 785 154.4
B 11 111 16842 103.98 808 785 154.4
C 14 238 125135 683.06 780 783 182.1
C 3 233 10358 52.59 780 783 182.1
C 2 16 6968 33.97 780 783 182.1
D 9 35 3600208 19651.94 750 727 183.2
D 12 218 455879 2484.98 750 727 183.2
D 1 52 194006 1055.24 750 727 183.2

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