ASTROSAT CZTI

Data Quality Report

Orbit 46918

Creation date: 2024-06-27T23:29:25.150030
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_053T01_9000006282_46918cztM0_level2.fits modeM0/AS1A13_053T01_9000006282_46918cztM0_level2_quad_clean.evt
Size (bytes)1,642,870,080278,988,480
Size1.5 GB 266.1 MB
Events in quadrant A16,785,1541,914,048
Events in quadrant B22,195,0621,713,399
Events in quadrant C8,036,8081,899,258
Events in quadrant D12,365,5551,640,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0613633
B0791253
C0381063
D0499773

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185565723.082561%
B18557318517.163335%
C185572331.255591%
D1855714007.544323%

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 19761 18557 22 22 0.11% 0.12%
B 19762 18558 1530 1530 7.74% 8.24%
C 19762 18557 7 7 0.04% 0.04%
D 19762 18558 1122 1122 5.68% 6.05%

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 8713001 20591.48 2049 2002 423.0
A 13 248 88336 204.08 2049 2002 423.0
A 7 3 30955 68.44 2049 2002 423.0
B 3 112 13749477 35923.67 1956 1894 382.7
B 4 216 183722 475.13 1956 1894 382.7
B 5 32 127014 326.95 1956 1894 382.7
C 14 254 98388 201.79 2029 2031 477.5
C 3 233 18982 35.5 2029 2031 477.5
C 15 208 15195 27.57 2029 2031 477.5
D 10 181 2126386 4330.21 1967 1903 490.6
D 13 249 962589 1958.11 1967 1903 490.6
D 2 249 806329 1639.61 1967 1903 490.6

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