ASTROSAT CZTI

Data Quality Report

Orbit 51170

Creation date: 2025-03-15T10:04:55.560173
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/AS1C07_001T01_9000006454_51170cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51170cztM0_level2_quad_clean.evt
Size (bytes)2,270,419,200208,621,440
Size2.1 GB 199.0 MB
Events in quadrant A32,178,208946,562
Events in quadrant B13,982,5041,571,140
Events in quadrant C20,172,9731,297,279
Events in quadrant D16,360,3961,289,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01077893
B0535886
C0721103
D0612533

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17554793545.203372%
B17553199211.348487%
C17553299017.034125%
D17554240213.683491%

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 19243 17554 7840 7840 40.74% 44.66%
B 19242 17553 1196 1196 6.22% 6.81%
C 19242 17553 3000 3000 15.59% 17.09%
D 19243 17555 2485 2485 12.91% 14.16%

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 4 207 8998261 23748.74 1510 1468 378.8
A 4 4 7996803 21105.2 1510 1468 378.8
A 14 254 3961447 10453.12 1510 1468 378.8
B 12 32 2986675 8093.46 1739 1678 368.8
B 10 60 955103 2585.09 1739 1678 368.8
B 5 185 852515 2306.94 1739 1678 368.8
C 12 247 4880666 10452.35 1681 1670 466.8
C 4 12 3869224 8285.52 1681 1670 466.8
C 4 13 887568 1897.87 1681 1670 466.8
D 8 176 4546204 9512.41 1696 1641 477.8
D 3 12 1421876 2972.75 1696 1641 477.8
D 7 96 675580 1410.65 1696 1641 477.8

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