ASTROSAT CZTI

Data Quality Report

Orbit 21630

Creation date: 2024-06-27T18:30:26.265452
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/AS1A06_002T02_9000003206_21630cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21630cztM0_level2_quad_clean.evt
Size (bytes)478,817,28093,430,080
Size456.6 MB 89.1 MB
Events in quadrant A3,250,935600,459
Events in quadrant B3,436,852611,509
Events in quadrant C3,262,466582,972
Events in quadrant D4,086,741558,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141491
B0143731
C0140981
D0166411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68282193.207381%
B68282393.500293%
C68282423.544230%
D68292663.895153%

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 6903 6829 0 0 0.00% 0.00%
B 6903 6829 2 2 0.03% 0.03%
C 6903 6829 0 0 0.00% 0.00%
D 6904 6830 52 52 0.75% 0.76%

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 15 236 39080 228.28 828 809 167.6
A 5 16 19294 110.26 828 809 167.6
A 13 254 8940 48.5 828 809 167.6
B 0 219 36668 227.25 822 799 157.8
B 0 229 32087 198.23 822 799 157.8
B 0 197 30410 187.6 822 799 157.8
C 14 238 124131 658.89 797 798 187.2
C 0 207 11758 58.55 797 798 187.2
C 8 128 8473 41.0 797 798 187.2
D 1 52 417547 2103.83 806 782 198.1
D 7 238 288425 1452.02 806 782 198.1
D 2 136 176307 886.05 806 782 198.1

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