ASTROSAT CZTI

Data Quality Report

Orbit 13744

Creation date: 2024-06-27T16:45:28.052402
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_062T01_9000002038_13744cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13744cztM0_level2_quad_clean.evt
Size (bytes)1,369,301,760231,336,000
Size1.3 GB 220.6 MB
Events in quadrant A9,208,0021,437,667
Events in quadrant B9,490,3441,402,308
Events in quadrant C9,760,4611,471,458
Events in quadrant D11,761,8731,420,730

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391764
B0397333
C0404663
D0473553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184892941.590135%
B184892781.503597%
C184893972.147223%
D184893932.125588%

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 20200 18493 60 60 0.30% 0.32%
B 20200 18491 33 33 0.16% 0.18%
C 20200 18493 159 159 0.79% 0.86%
D 20200 18493 173 173 0.86% 0.94%

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 9 143 340185 743.45 2248 2200 454.6
A 15 69 127821 276.32 2248 2200 454.6
A 1 162 50009 105.16 2248 2200 454.6
B 4 173 166537 387.62 2229 2176 424.0
B 3 64 139916 324.84 2229 2176 424.0
B 0 219 138991 322.66 2229 2176 424.0
C 4 254 957142 1870.07 2193 2205 510.6
C 3 233 209372 405.7 2193 2205 510.6
C 13 61 15960 26.94 2193 2205 510.6
D 13 168 1188715 2222.77 2194 2132 533.8
D 10 157 834212 1558.7 2194 2132 533.8
D 5 222 684382 1278.03 2194 2132 533.8

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