ASTROSAT CZTI

Data Quality Report

Orbit 01011

Creation date: 2024-06-27T14:06:06.868865
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/AS1P01_998T02_9000000190_01011cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01011cztM0_level2_quad_clean.evt
Size (bytes)1,015,257,600114,514,560
Size968.2 MB 109.2 MB
Events in quadrant A7,687,831770,584
Events in quadrant B8,009,013775,717
Events in quadrant C7,611,441739,679
Events in quadrant D7,013,040734,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274445
B0283591
C0272231
D0253951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6412600.935745%
B6412620.966937%
C6412500.779788%
D6412490.764192%

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 7502 6413 212 212 2.83% 3.31%
B 7502 6413 251 251 3.35% 3.91%
C 7502 6413 196 196 2.61% 3.06%
D 7502 6413 145 145 1.93% 2.26%

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 12369 21.65 1999 2014 478.4
A 11 79 8503 13.56 1999 2014 478.4
A 3 111 6284 8.93 1999 2014 478.4
B 5 249 50208 98.97 2059 2063 486.5
B 7 221 27916 53.14 2059 2063 486.5
B 15 22 22953 42.94 2059 2063 486.5
C 15 241 301098 579.81 1855 1914 516.0
C 3 111 22810 40.49 1855 1914 516.0
C 9 85 19049 33.21 1855 1914 516.0
D 1 4 211586 374.92 1816 1875 559.4
D 13 73 10663 15.71 1816 1875 559.4
D 0 255 7242 9.59 1816 1875 559.4

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