ASTROSAT CZTI

Data Quality Report

Orbit 21454

Creation date: 2024-06-27T18:27:58.551505
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/AS1A05_117T01_9000003166_21454cztM0_level2.evt modeM0/AS1A05_117T01_9000003166_21454cztM0_level2_quad_clean.evt
Size (bytes)428,137,92094,034,880
Size408.3 MB 89.7 MB
Events in quadrant A3,064,481608,793
Events in quadrant B3,097,928616,004
Events in quadrant C3,050,569593,843
Events in quadrant D3,323,019587,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130281
B0130751
C0130841
D0139981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63241111.755218%
B63251292.039526%
C63251211.913043%
D63251151.818182%

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 7059 6324 0 0 0.00% 0.00%
B 7060 6325 1 1 0.01% 0.02%
C 7060 6325 0 0 0.00% 0.00%
D 7060 6325 20 20 0.28% 0.32%

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 11 47 26977 165.43 788 772 158.4
A 13 254 9749 56.67 788 772 158.4
A 0 226 6908 38.74 788 772 158.4
B 12 111 18468 117.89 783 766 150.2
B 0 197 17673 112.59 783 766 150.2
B 11 111 16311 103.52 783 766 150.2
C 14 238 119675 678.88 750 755 175.2
C 3 233 8415 43.73 750 755 175.2
C 13 61 5126 24.95 750 755 175.2
D 12 235 122605 654.4 766 744 186.2
D 14 34 90617 482.62 766 744 186.2
D 14 35 84665 450.66 766 744 186.2

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