ASTROSAT CZTI

Data Quality Report

Orbit 09236

Creation date: 2024-06-27T15:43:05.628023
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/AS1A03_051T01_9000001288_09236cztM0_level2.evt modeM0/AS1A03_051T01_9000001288_09236cztM0_level2_quad_clean.evt
Size (bytes)1,153,820,160181,912,320
Size1.1 GB 173.5 MB
Events in quadrant A9,345,7401,107,822
Events in quadrant B9,113,1411,137,319
Events in quadrant C7,395,2561,105,771
Events in quadrant D8,014,2081,061,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378164
B0371513
C0324853
D0346343

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159102851.791326%
B159103662.300440%
C15910320.201131%
D15910910.571967%

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 19760 15913 158 158 0.80% 0.99%
B 19760 15913 257 257 1.30% 1.62%
C 19760 15913 0 0 0.00% 0.00%
D 19760 15913 44 44 0.22% 0.28%

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 8 5 1112129 2849.32 1939 1905 389.6
A 15 174 339981 867.65 1939 1905 389.6
A 1 162 176890 449.09 1939 1905 389.6
B 6 51 813324 2219.75 1953 1910 365.5
B 8 234 231253 627.4 1953 1910 365.5
B 0 245 156241 422.2 1953 1910 365.5
C 13 61 14515 29.1 1889 1901 433.5
C 12 4 12741 25.0 1889 1901 433.5
C 14 67 11959 23.2 1889 1901 433.5
D 1 52 200664 410.8 1864 1818 484.0
D 12 233 182393 373.05 1864 1818 484.0
D 7 71 173377 354.42 1864 1818 484.0

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