ASTROSAT CZTI

Data Quality Report

Orbit 37768

Creation date: 2024-06-27T21:44:11.482182
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/AS1A11_106T02_9000005344_37768cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37768cztM0_level2_quad_clean.evt
Size (bytes)541,019,52050,552,640
Size516.0 MB 48.2 MB
Events in quadrant A2,946,799298,514
Events in quadrant B3,001,766290,871
Events in quadrant C2,678,940307,574
Events in quadrant D7,414,130277,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117802
B0119881
C0107011
D0255831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5071531.045159%
B50711512.977716%
C5071200.394400%
D507193118.359298%

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 7223 5072 46 46 0.64% 0.91%
B 7223 5072 130 130 1.80% 2.56%
C 7223 5072 19 19 0.26% 0.37%
D 7223 5072 1036 1036 14.34% 20.43%

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 307473 2473.99 618 607 124.0
A 9 143 178420 1433.55 618 607 124.0
A 6 10 46626 371.01 618 607 124.0
B 4 81 261532 2323.95 604 592 112.3
B 5 255 97706 864.9 604 592 112.3
B 5 172 75941 671.06 604 592 112.3
C 15 214 217574 1559.77 606 611 139.1
C 0 10 74614 532.01 606 611 139.1
C 3 233 8685 58.04 606 611 139.1
D 12 235 2941646 20869.31 578 564 140.9
D 2 249 781154 5538.9 578 564 140.9
D 5 222 620825 4401.24 578 564 140.9

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