ASTROSAT CZTI

Data Quality Report

Orbit 46929

Creation date: 2024-06-27T23:29:35.221802
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_9000006286_46929cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46929cztM0_level2_quad_clean.evt
Size (bytes)606,746,880123,330,240
Size578.6 MB 117.6 MB
Events in quadrant A7,325,191820,230
Events in quadrant B4,705,180841,710
Events in quadrant C3,614,076810,908
Events in quadrant D6,207,614715,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268310
B0192490
C0166520
D0241590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7851951.210037%
B7852801.018849%
C7852390.496689%
D78524956.304126%

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 7851 7851 3 3 0.04% 0.04%
B 7852 7852 28 28 0.36% 0.36%
C 7852 7852 32 32 0.41% 0.41%
D 7852 7852 421 421 5.36% 5.36%

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 3882593 21216.05 870 852 183.0
A 9 191 35457 189.14 870 852 183.0
A 7 3 24586 129.72 870 852 183.0
B 3 112 1101805 6247.81 872 843 176.2
B 0 198 42862 238.45 872 843 176.2
B 0 200 29903 164.91 872 843 176.2
C 14 254 252365 1225.23 859 862 205.3
C 3 233 9101 40.14 859 862 205.3
C 13 61 5721 23.67 859 862 205.3
D 1 52 1954748 9212.53 834 808 212.1
D 13 249 563700 2653.95 834 808 212.1
D 2 249 194652 913.94 834 808 212.1

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