ASTROSAT CZTI

Data Quality Report

Orbit 46092

Creation date: 2024-06-27T23:19:07.857662
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_077T01_9000006168_46092cztM0_level2.fits modeM0/AS1A13_077T01_9000006168_46092cztM0_level2_quad_clean.evt
Size (bytes)469,915,200110,427,840
Size448.1 MB 105.3 MB
Events in quadrant A6,077,574727,646
Events in quadrant B3,564,232752,588
Events in quadrant C3,201,140723,759
Events in quadrant D4,013,128656,585

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222902
B0151941
C0144461
D0166531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69362062.970012%
B69361422.047290%
C6936911.311995%
D69362133.070934%

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 7661 6937 3 3 0.04% 0.04%
B 7661 6937 20 20 0.26% 0.29%
C 7661 6937 3 3 0.04% 0.04%
D 7661 6937 116 116 1.51% 1.67%

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 2875612 17437.81 787 767 164.9
A 9 191 132236 797.45 787 767 164.9
A 13 254 11486 65.02 787 767 164.9
B 0 190 297517 1862.39 783 756 159.3
B 5 172 120336 750.45 783 756 159.3
B 3 112 36461 224.07 783 756 159.3
C 14 254 137021 739.23 777 782 184.3
C 3 233 29821 157.57 777 782 184.3
C 13 61 5160 23.76 777 782 184.3
D 5 235 502581 2562.67 774 749 195.8
D 1 52 325255 1657.13 774 749 195.8
D 7 39 56753 285.99 774 749 195.8

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