ASTROSAT CZTI

Data Quality Report

Orbit 46927

Creation date: 2024-06-27T23:29:32.564058
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_074T06_9000006284_46927cztM0_level2.fits modeM0/AS1A13_074T06_9000006284_46927cztM0_level2_quad_clean.evt
Size (bytes)552,265,92099,400,320
Size526.7 MB 94.8 MB
Events in quadrant A6,139,927675,693
Events in quadrant B5,851,334641,640
Events in quadrant C2,750,391663,638
Events in quadrant D5,206,817583,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224741
B0216951
C0130541
D0199601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63861702.662073%
B638768510.724910%
C638790.140911%
D63874436.935964%

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 7036 6387 6 6 0.09% 0.09%
B 7037 6388 585 585 8.31% 9.16%
C 7037 6388 3 3 0.04% 0.05%
D 7037 6388 408 408 5.80% 6.39%

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 3344463 22601.99 705 691 147.9
A 9 191 21031 137.49 705 691 147.9
A 15 254 15237 98.32 705 691 147.9
B 3 112 2711637 19677.39 685 662 137.8
B 4 171 135915 981.72 685 662 137.8
B 5 32 90039 648.74 685 662 137.8
C 14 254 47724 286.93 688 690 163.9
C 14 67 12631 72.84 688 690 163.9
C 13 61 4570 23.67 688 690 163.9
D 1 52 1537695 9121.85 668 646 168.5
D 13 249 257655 1525.26 668 646 168.5
D 10 181 217099 1284.57 668 646 168.5

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