ASTROSAT CZTI

Data Quality Report

Orbit 37254

Creation date: 2024-06-27T21:37:29.344711
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/AS1T04_087T01_9000005292_37254cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37254cztM0_level2_quad_clean.evt
Size (bytes)1,356,943,680204,500,160
Size1.3 GB 195.0 MB
Events in quadrant A10,036,1851,285,436
Events in quadrant B8,845,5351,304,758
Events in quadrant C8,989,0831,261,651
Events in quadrant D12,112,3271,204,822

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410595
B0371634
C0370684
D0476034

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164746453.915260%
B164741681.019789%
C164742261.371859%
D1647410346.276557%

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 21996 16478 468 468 2.13% 2.84%
B 21996 16478 79 79 0.36% 0.48%
C 21996 16478 205 205 0.93% 1.24%
D 21996 16478 1033 1033 4.70% 6.27%

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 15 237 1993250 5333.1 1853 1818 373.4
A 10 83 684533 1828.33 1853 1818 373.4
A 13 248 90228 236.76 1853 1818 373.4
B 0 190 269979 751.8 1864 1814 356.7
B 5 172 269718 751.07 1864 1814 356.7
B 0 213 251487 699.96 1864 1814 356.7
C 14 254 788937 1857.09 1809 1819 423.8
C 15 214 688563 1620.27 1809 1819 423.8
C 0 10 198721 464.56 1809 1819 423.8
D 2 249 3903530 8996.11 1794 1745 433.7
D 13 249 280450 642.59 1794 1745 433.7
D 13 171 203591 465.38 1794 1745 433.7

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