ASTROSAT CZTI

Data Quality Report

Orbit 46168

Creation date: 2024-06-27T23:19:55.929252
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/AS1T05_194T01_9000006180_46168cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46168cztM0_level2_quad_clean.evt
Size (bytes)526,296,960100,160,640
Size501.9 MB 95.5 MB
Events in quadrant A5,575,697684,510
Events in quadrant B3,970,760702,293
Events in quadrant C3,374,539664,470
Events in quadrant D6,085,274552,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205271
B0158731
C0145151
D0223361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61361572.558670%
B61371562.541959%
C61371171.906469%
D613783813.654880%

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 7251 6137 33 33 0.46% 0.54%
B 7252 6138 77 77 1.06% 1.25%
C 7252 6138 91 91 1.25% 1.48%
D 7252 6138 717 717 9.89% 11.68%

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 2786788 19483.74 689 675 143.0
A 9 191 45718 314.99 689 675 143.0
A 7 3 40872 281.1 689 675 143.0
B 3 112 984863 7462.33 680 660 131.9
B 5 172 170256 1285.89 680 660 131.9
B 15 201 94461 711.21 680 660 131.9
C 14 254 680879 4406.33 661 664 154.4
C 12 2 67853 435.24 661 664 154.4
C 2 14 32690 207.46 661 664 154.4
D 1 52 1475687 9317.05 631 612 158.3
D 13 249 863824 5452.32 631 612 158.3
D 5 235 618022 3899.76 631 612 158.3

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