ASTROSAT CZTI

Data Quality Report

Orbit 14613

Creation date: 2024-06-27T16:57:30.429031
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/AS1A04_016T01_9000002152_14613cztM0_level2.evt modeM0/AS1A04_016T01_9000002152_14613cztM0_level2_quad_clean.evt
Size (bytes)1,349,573,760209,125,440
Size1.3 GB 199.4 MB
Events in quadrant A9,622,7481,279,245
Events in quadrant B9,165,4311,282,792
Events in quadrant C11,063,0591,256,743
Events in quadrant D9,772,9101,241,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400105
B0386364
C0453264
D0416094

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184623191.727873%
B184623331.803705%
C184622761.494963%
D184625743.109089%

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 20819 18465 1 1 0.00% 0.01%
B 20819 18464 16 16 0.08% 0.09%
C 20819 18465 4 4 0.02% 0.02%
D 20819 18465 251 251 1.21% 1.36%

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 1 162 275968 607.65 2237 2188 450.6
A 0 23 212631 467.08 2237 2188 450.6
A 8 15 168697 369.56 2237 2188 450.6
B 0 229 146857 338.54 2225 2167 427.4
B 0 189 90473 206.61 2225 2167 427.4
B 0 205 63841 144.3 2225 2167 427.4
C 3 233 2615061 5214.94 2164 2175 501.0
C 13 61 15354 26.3 2164 2175 501.0
C 14 225 9721 15.06 2164 2175 501.0
D 10 70 967874 1893.05 2156 2102 510.2
D 10 199 356409 694.49 2156 2102 510.2
D 2 152 78947 150.63 2156 2102 510.2

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