ASTROSAT CZTI

Data Quality Report

Orbit 43120

Creation date: 2024-06-27T22:48:16.340628
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/AS1T05_154T01_9000005850_43120cztM0_level2.fits modeM0/AS1T05_154T01_9000005850_43120cztM0_level2_quad_clean.evt
Size (bytes)992,684,160248,832,000
Size946.7 MB 237.3 MB
Events in quadrant A9,983,1841,634,238
Events in quadrant B7,023,1751,686,003
Events in quadrant C7,983,4791,650,954
Events in quadrant D10,542,7901,481,639

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400944
B0325974
C0343794
D0429084

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0510
C0510
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156674923.140359%
B15667770.491479%
C15666390.248947%
D156665553.542704%

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 19817 15670 297 297 1.50% 1.90%
B 19817 15670 37 37 0.19% 0.24%
C 19816 15669 25 25 0.13% 0.16%
D 19816 15669 493 493 2.49% 3.15%

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 1502545 4529.1 1630 1595 331.4
A 15 222 1140550 3436.78 1630 1595 331.4
A 15 237 841659 2534.88 1630 1595 331.4
B 5 255 284782 912.49 1631 1583 310.4
B 0 229 148876 474.59 1631 1583 310.4
B 0 189 64912 204.05 1631 1583 310.4
C 0 239 976658 2626.96 1607 1616 371.2
C 15 214 652157 1752.69 1607 1616 371.2
C 3 233 37795 97.47 1607 1616 371.2
D 1 52 3243137 8423.66 1586 1540 384.8
D 13 249 590704 1531.01 1586 1540 384.8
D 5 32 228144 588.86 1586 1540 384.8

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