ASTROSAT CZTI

Data Quality Report

Orbit 45271

Creation date: 2024-06-27T23:11:46.804709
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/AS1A13_024T03_9000006064_45271cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45271cztM0_level2_quad_clean.evt
Size (bytes)500,063,040118,025,280
Size476.9 MB 112.6 MB
Events in quadrant A5,633,465792,860
Events in quadrant B3,389,075849,352
Events in quadrant C3,227,701802,537
Events in quadrant D5,744,895666,040

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216962
B0144952
C0142093
D0217212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66471782.677900%
B6647831.248684%
C6646250.376166%
D66466209.328920%

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 7902 6647 34 34 0.43% 0.51%
B 7902 6648 36 36 0.46% 0.54%
C 7901 6647 18 18 0.23% 0.27%
D 7901 6646 578 578 7.32% 8.70%

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 10 83 2596712 16351.18 777 762 158.8
A 13 248 26449 161.8 777 762 158.8
A 13 254 9180 53.02 777 762 158.8
B 4 171 131380 854.04 790 769 152.9
B 5 255 62297 402.32 790 769 152.9
B 0 168 31907 203.6 790 769 152.9
C 14 254 134792 739.86 773 776 181.1
C 12 2 57656 314.02 773 776 181.1
C 3 233 19755 104.78 773 776 181.1
D 11 241 711249 3879.9 728 707 183.1
D 9 49 648800 3538.9 728 707 183.1
D 13 249 596588 3253.79 728 707 183.1

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