ASTROSAT CZTI

Data Quality Report

Orbit 30782

Creation date: 2024-06-27T20:19:33.436203
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/AS1A10_071T18_9000004448_30782cztM0_level2.evt modeM0/AS1A10_071T18_9000004448_30782cztM0_level2_quad_clean.evt
Size (bytes)1,833,531,840223,908,480
Size1.7 GB 213.5 MB
Events in quadrant A10,334,7401,437,409
Events in quadrant B13,794,8181,441,495
Events in quadrant C10,734,7961,362,273
Events in quadrant D19,453,3811,296,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0424303
B0545943
C0435443
D0709143

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180334822.672878%
B180343251.802151%
C180346923.837196%
D18034204111.317511%

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 19803 18033 279 279 1.41% 1.55%
B 19804 18034 4 4 0.02% 0.02%
C 19804 18034 255 255 1.29% 1.41%
D 19804 18034 1974 1974 9.97% 10.95%

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 0 13 1902582 4347.44 2182 2135 437.1
A 13 254 33159 70.97 2182 2135 437.1
A 3 137 22134 45.75 2182 2135 437.1
B 6 159 5067285 12223.2 2165 2110 414.4
B 0 190 96390 227.51 2165 2110 414.4
B 12 111 53133 123.13 2165 2110 414.4
C 0 10 1986722 4051.65 2078 2090 489.8
C 14 238 335208 680.06 2078 2090 489.8
C 3 233 235166 475.83 2078 2090 489.8
D 8 195 9453753 17350.49 2046 2007 544.8
D 13 249 1108795 2031.72 2046 2007 544.8
D 12 233 552762 1011.02 2046 2007 544.8

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