ASTROSAT CZTI

Data Quality Report

Orbit 23231

Creation date: 2024-06-27T18:51:37.010070
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/AS1A08_009T01_9000003434_23231cztM0_level2.evt modeM0/AS1A08_009T01_9000003434_23231cztM0_level2_quad_clean.evt
Size (bytes)506,064,96087,828,480
Size482.6 MB 83.8 MB
Events in quadrant A3,498,529559,848
Events in quadrant B3,630,797567,769
Events in quadrant C3,692,950546,122
Events in quadrant D4,067,941537,767

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146032
B0151342
C0152232
D0165942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64271081.680411%
B64271171.820445%
C64271922.987397%
D64271822.831803%

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 7697 6427 0 0 0.00% 0.00%
B 7697 6427 1 1 0.01% 0.02%
C 7697 6427 15 15 0.19% 0.23%
D 7697 6427 72 72 0.94% 1.12%

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 13 252 40445 224.51 891 875 176.2
A 6 16 25019 136.99 891 875 176.2
A 13 254 10315 53.56 891 875 176.2
B 0 190 113960 696.13 885 866 162.5
B 0 229 33966 203.74 885 866 162.5
B 12 111 18012 105.54 885 866 162.5
C 14 238 138569 702.7 859 867 196.0
C 0 10 129676 657.32 859 867 196.0
C 10 9 69079 348.09 859 867 196.0
D 2 82 233202 1109.34 875 852 209.4
D 1 52 153944 730.93 875 852 209.4
D 2 152 130697 619.94 875 852 209.4

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