ASTROSAT CZTI

Data Quality Report

Orbit 04283

Creation date: 2024-06-27T14:39:47.203979
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/AS1G05_240T01_9000000536_04283cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04283cztM0_level2_quad_clean.evt
Size (bytes)603,904,32060,033,600
Size575.9 MB 57.3 MB
Events in quadrant A4,841,552334,136
Events in quadrant B3,987,391377,840
Events in quadrant C2,634,764364,822
Events in quadrant D6,437,546338,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179322
B0156411
C0117421
D0231611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A573777213.456510%
B57371582.754053%
C5737340.592644%
D57374097.129162%

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 6987 5737 599 599 8.57% 10.44%
B 6987 5737 68 68 0.97% 1.19%
C 6987 5738 0 0 0.00% 0.00%
D 6987 5737 328 328 4.69% 5.72%

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 0 199 1680870 12547.37 660 648 133.9
A 0 50 313298 2334.77 660 648 133.9
A 0 226 152864 1136.7 660 648 133.9
B 3 0 954306 7116.75 700 686 134.0
B 4 170 190381 1415.67 700 686 134.0
B 15 204 35489 259.73 700 686 134.0
C 13 61 5612 31.36 672 676 157.4
C 9 144 4351 23.35 672 676 157.4
C 9 54 3275 16.51 672 676 157.4
D 11 132 1923365 11762.93 669 649 163.5
D 2 232 1483223 9070.2 669 649 163.5
D 4 95 158042 962.91 669 649 163.5

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