ASTROSAT CZTI

Data Quality Report

Orbit 01174

Creation date: 2024-06-27T14:08:39.696191
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_997T02_9000000218_01174cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01174cztM0_level2_quad_clean.evt
Size (bytes)1,230,292,80084,479,040
Size1.1 GB 80.6 MB
Events in quadrant A7,237,000613,921
Events in quadrant B7,711,360611,094
Events in quadrant C7,197,729584,763
Events in quadrant D14,711,682322,773

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258032
B0272141
C0257021
D0486811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6066230.379163%
B6066160.263765%
C6066110.181339%
D6066399465.842400%

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 7001 6067 206 206 2.94% 3.40%
B 7000 6066 307 307 4.39% 5.06%
C 7001 6067 170 170 2.43% 2.80%
D 7001 6067 4106 4106 58.65% 67.68%

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 12 243 22070 44.76 1877 1890 450.9
A 11 79 8934 15.62 1877 1890 450.9
A 3 111 6095 9.33 1877 1890 450.9
B 2 32 190324 413.94 1918 1929 455.1
B 6 53 94069 202.45 1918 1929 455.1
B 15 22 56954 120.9 1918 1929 455.1
C 15 241 295681 612.94 1727 1781 479.5
C 9 83 117240 240.8 1727 1781 479.5
C 3 111 22055 42.28 1727 1781 479.5
D 1 239 10490190 30249.01 1108 1141 346.8
D 2 16 35094 97.92 1108 1141 346.8
D 12 22 12328 32.26 1108 1141 346.8

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