ASTROSAT CZTI

Data Quality Report

Orbit 46606

Creation date: 2024-06-27T23:25:22.048357
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_092T09_9000006238_46606cztM0_level2.fits modeM0/AS1A13_092T09_9000006238_46606cztM0_level2_quad_clean.evt
Size (bytes)551,088,000107,300,160
Size525.6 MB 102.3 MB
Events in quadrant A7,050,798689,067
Events in quadrant B3,756,206738,467
Events in quadrant C3,300,410717,109
Events in quadrant D5,762,192628,080

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253693
B0158301
C0148551
D0219071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68354526.613021%
B68351862.721287%
C68361211.770041%
D68365117.475132%

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 7830 6836 237 237 3.03% 3.47%
B 7830 6836 46 46 0.59% 0.67%
C 7831 6837 65 65 0.83% 0.95%
D 7831 6837 400 400 5.11% 5.85%

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 3464953 22402.46 744 728 154.6
A 0 247 514799 3324.4 744 728 154.6
A 15 235 57976 370.21 744 728 154.6
B 0 189 363473 2401.66 760 735 151.0
B 15 201 146005 961.82 760 735 151.0
B 0 198 65396 428.11 760 735 151.0
C 14 254 172660 974.25 746 751 176.5
C 1 3 171607 968.28 746 751 176.5
C 11 16 14192 76.17 746 751 176.5
D 1 52 1581458 8577.34 724 703 184.3
D 13 249 537894 2914.85 724 703 184.3
D 12 128 160381 866.43 724 703 184.3

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