ASTROSAT CZTI

Data Quality Report

Orbit 47638

Creation date: 2024-07-20T00:31:12.945615
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_071T01_9000006340_47638cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47638cztM0_level2_quad_clean.evt
Size (bytes)508,417,920114,897,600
Size484.9 MB 109.6 MB
Events in quadrant A7,905,021744,287
Events in quadrant B3,351,854783,868
Events in quadrant C3,494,886749,381
Events in quadrant D3,510,356701,063

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288011
B0149931
C0157431
D0156491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71914115.715478%
B71911171.627034%
C7191731.015158%
D7191570.792657%

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 7546 7193 99 99 1.31% 1.38%
B 7546 7193 8 8 0.11% 0.11%
C 7546 7193 37 37 0.49% 0.51%
D 7546 7193 10 10 0.13% 0.14%

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 4051821 24470.35 796 778 165.5
A 9 191 415709 2506.39 796 778 165.5
A 13 248 283124 1705.51 796 778 165.5
B 0 190 66171 412.5 801 778 158.5
B 5 172 46701 289.69 801 778 158.5
B 12 111 20885 126.84 801 778 158.5
C 1 3 294875 1598.9 779 782 183.9
C 14 254 121726 657.54 779 782 183.9
C 4 0 18865 98.31 779 782 183.9
D 2 249 122416 610.62 790 761 199.2
D 7 55 112582 561.26 790 761 199.2
D 8 176 112016 558.42 790 761 199.2

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