ASTROSAT CZTI

Data Quality Report

Orbit 06156

Creation date: 2024-06-27T15:03:31.036320
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/AS1A02_199T01_9000000800_06156cztM0_level2.evt modeM0/AS1A02_199T01_9000000800_06156cztM0_level2_quad_clean.evt
Size (bytes)607,060,800123,649,920
Size578.9 MB 117.9 MB
Events in quadrant A4,082,031805,874
Events in quadrant B5,329,358798,779
Events in quadrant C4,004,913792,555
Events in quadrant D4,376,025741,429

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01846547
B02183760
C01821445
D01963742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87341091.247996%
B87335145.885721%
C8732620.710032%
D87362012.300824%

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 9033 8754 32 32 0.35% 0.37%
B 9033 8752 229 229 2.54% 2.62%
C 9033 8754 0 0 0.00% 0.00%
D 9033 8754 118 118 1.31% 1.35%

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 8 15 104205 498.42 1010 985 207.1
A 0 254 90149 430.55 1010 985 207.1
A 12 194 9660 41.89 1010 985 207.1
B 3 64 1308503 6828.05 1006 980 191.5
B 0 214 53061 271.97 1006 980 191.5
B 15 204 24939 125.12 1006 980 191.5
C 1 16 89225 384.74 994 997 229.3
C 8 128 17015 69.85 994 997 229.3
C 8 112 8751 33.81 994 997 229.3
D 2 33 301974 1256.89 974 941 239.5
D 5 97 85738 354.05 974 941 239.5
D 8 195 74109 305.49 974 941 239.5

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