ASTROSAT CZTI

Data Quality Report

Orbit 46283

Creation date: 2024-06-27T23:21:13.941137
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_072T01_9000006192_46283cztM0_level2.fits modeM0/AS1A13_072T01_9000006192_46283cztM0_level2_quad_clean.evt
Size (bytes)493,148,160107,435,520
Size470.3 MB 102.5 MB
Events in quadrant A5,716,406703,217
Events in quadrant B5,009,646731,945
Events in quadrant C3,012,757714,392
Events in quadrant D4,001,972641,167

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211421
B0195981
C0138521
D0165083

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66271792.701071%
B66281942.926976%
C6628911.372963%
D66272483.742266%

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 7572 6628 1 1 0.01% 0.02%
B 7573 6629 35 35 0.46% 0.53%
C 7573 6629 18 18 0.24% 0.27%
D 7572 6628 150 150 1.98% 2.26%

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 2851201 18686.17 735 720 152.5
A 13 254 10241 62.41 735 720 152.5
A 3 137 8622 51.8 735 720 152.5
B 3 112 1986712 13682.26 732 709 145.2
B 0 190 70880 483.43 732 709 145.2
B 5 172 25663 171.92 732 709 145.2
C 2 14 113428 665.01 726 730 169.5
C 12 2 55477 323.05 726 730 169.5
C 1 90 5706 29.36 726 730 169.5
D 1 52 977320 5440.04 719 697 179.5
D 2 249 108843 602.4 719 697 179.5
D 13 249 82977 458.32 719 697 179.5

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