ASTROSAT CZTI

Data Quality Report

Orbit 01127

Creation date: 2024-06-27T14:07:56.016573
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/AS1P01_997T01_9000000214_01127cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01127cztM0_level2_quad_clean.evt
Size (bytes)4,245,462,720414,403,200
Size4.0 GB 395.2 MB
Events in quadrant A31,818,7942,708,585
Events in quadrant B33,696,0122,708,912
Events in quadrant C32,669,2452,635,159
Events in quadrant D28,575,4572,609,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140466
B01196675
C01165645
D01046715

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05600
B05600
C05600
D05600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27505210.076350%
B27505820.298128%
C27505650.236321%
D27505810.294492%

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 32495 27509 511 511 1.57% 1.86%
B 32495 27509 808 808 2.49% 2.94%
C 32495 27509 800 800 2.46% 2.91%
D 32495 27509 353 353 1.09% 1.28%

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 15 233 35625 13.78 8264 8326 1980.5
A 0 175 35448 13.69 8264 8326 1980.5
A 11 79 30901 11.4 8264 8326 1980.5
B 8 4 268769 129.23 8603 8653 2012.8
B 15 22 242348 116.1 8603 8653 2012.8
B 0 190 116093 53.38 8603 8653 2012.8
C 15 241 1400700 647.58 7744 8003 2150.6
C 5 234 623002 285.96 7744 8003 2150.6
C 9 54 213084 95.36 7744 8003 2150.6
D 10 125 133348 56.43 7575 7790 2224.8
D 2 16 78856 31.94 7575 7790 2224.8
D 10 85 43726 16.15 7575 7790 2224.8

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