ASTROSAT CZTI

Data Quality Report

Orbit 45281

Creation date: 2024-06-27T23:11:53.838634
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_45281cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45281cztM0_level2_quad_clean.evt
Size (bytes)563,336,640106,030,080
Size537.2 MB 101.1 MB
Events in quadrant A6,089,346714,179
Events in quadrant B4,740,653695,362
Events in quadrant C3,385,687717,322
Events in quadrant D6,113,405612,858

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231622
B0186962
C0148782
D0229822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67533324.916333%
B675367910.054790%
C67531382.043536%
D67536749.980749%

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 7708 6753 118 118 1.53% 1.75%
B 7708 6753 514 514 6.67% 7.61%
C 7708 6753 82 82 1.06% 1.21%
D 7708 6753 513 513 6.66% 7.60%

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 2763100 17250.3 762 745 160.1
A 13 248 364681 2272.7 762 745 160.1
A 0 243 11568 67.59 762 745 160.1
B 4 171 1590912 10977.58 728 707 144.9
B 5 32 153981 1058.09 728 707 144.9
B 0 183 39990 271.18 728 707 144.9
C 14 254 255775 1424.0 757 762 179.1
C 3 233 72871 402.66 757 762 179.1
C 12 2 70200 387.74 757 762 179.1
D 12 33 974392 5264.74 736 715 184.9
D 5 222 812432 4389.01 736 715 184.9
D 2 249 675244 3647.23 736 715 184.9

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