ASTROSAT CZTI

Data Quality Report

Orbit 01344

Creation date: 2024-06-27T14:11:16.024657
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/AS1G04_002T02_9000000230_01344cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01344cztM0_level2_quad_clean.evt
Size (bytes)1,034,971,20098,130,240
Size987.0 MB 93.6 MB
Events in quadrant A7,789,957632,847
Events in quadrant B8,071,901647,025
Events in quadrant C7,456,306640,734
Events in quadrant D7,614,329617,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275513
B0283832
C0265532
D0270432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210861.384863%
B6210400.644122%
C6210120.193237%
D6210370.595813%

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 7445 6211 340 340 4.57% 5.47%
B 7445 6211 338 338 4.54% 5.44%
C 7445 6211 198 198 2.66% 3.19%
D 7445 6211 402 402 5.40% 6.47%

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 32 518816 1184.95 1827 1843 436.3
A 15 127 235817 536.29 1827 1843 436.3
A 11 79 7901 13.89 1827 1843 436.3
B 8 4 246785 541.7 1946 1956 452.0
B 5 191 210852 462.19 1946 1956 452.0
B 12 52 80289 173.32 1946 1956 452.0
C 15 241 259662 518.48 1798 1861 497.2
C 3 9 86958 171.14 1798 1861 497.2
C 9 52 34141 64.92 1798 1861 497.2
D 12 22 797012 1502.07 1715 1778 529.4
D 1 83 126648 235.86 1715 1778 529.4
D 2 88 90925 168.38 1715 1778 529.4

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