ASTROSAT CZTI

Data Quality Report

Orbit 45694

Creation date: 2024-06-27T23:15:08.404164
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_028T01_9000006122_45694cztM0_level2.fits modeM0/AS1A13_028T01_9000006122_45694cztM0_level2_quad_clean.evt
Size (bytes)789,238,08096,906,240
Size752.7 MB 92.4 MB
Events in quadrant A6,035,251743,805
Events in quadrant B3,671,872760,589
Events in quadrant C14,358,757284,023
Events in quadrant D4,623,496672,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221871
B0153321
C0473101
D0182652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67862503.684055%
B67872523.712981%
C6787460367.820834%
D67862904.273504%

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 7616 6786 3 3 0.04% 0.04%
B 7617 6787 65 65 0.85% 0.96%
C 7616 6786 4492 4492 58.98% 66.20%
D 7616 6786 180 180 2.36% 2.65%

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 2953836 18191.74 785 767 162.3
A 13 248 19787 117.17 785 767 162.3
A 2 79 13099 75.97 785 767 162.3
B 3 112 151332 979.59 781 754 153.7
B 12 18 125137 809.17 781 754 153.7
B 0 186 103072 665.63 781 754 153.7
C 9 54 11874470 84264.46 602 607 140.9
C 14 254 104185 735.06 602 607 140.9
C 0 207 23060 159.34 602 607 140.9
D 2 165 592618 3067.11 772 747 193.0
D 1 52 268110 1385.49 772 747 193.0
D 13 249 227175 1173.36 772 747 193.0

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