ASTROSAT CZTI

Data Quality Report

Orbit 12673

Creation date: 2024-06-27T16:30:51.823034
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_174T01_9000001876_12673cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12673cztM0_level2_quad_clean.evt
Size (bytes)1,513,442,880242,110,080
Size1.4 GB 230.9 MB
Events in quadrant A9,054,1391,584,195
Events in quadrant B16,245,8961,325,191
Events in quadrant C9,048,7841,591,709
Events in quadrant D10,195,7071,514,612

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391945
B0603614
C0395604
D0431494

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190942691.408820%
B19094307216.088824%
C190942171.136483%
D190943211.681156%

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 21230 19096 3 3 0.01% 0.02%
B 21230 19095 2458 2458 11.58% 12.87%
C 21230 19097 28 28 0.13% 0.15%
D 21230 19096 142 142 0.67% 0.74%

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 87311 178.22 2328 2276 477.1
A 0 226 20313 37.8 2328 2276 477.1
A 12 194 17858 32.66 2328 2276 477.1
B 4 239 7037394 17172.27 2125 2070 409.7
B 3 64 359419 872.24 2125 2070 409.7
B 3 209 229766 555.77 2125 2070 409.7
C 15 208 179195 336.67 2272 2295 525.4
C 13 61 16763 27.53 2272 2295 525.4
C 14 234 11898 18.28 2272 2295 525.4
D 1 52 875116 1637.86 2241 2195 533.0
D 10 199 191444 355.09 2241 2195 533.0
D 13 249 189991 352.36 2241 2195 533.0

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