ASTROSAT CZTI

Data Quality Report

Orbit 43690

Creation date: 2024-06-27T22:54:34.401853
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_008T01_9000005898_43690cztM0_level2.fits modeM0/AS1A13_008T01_9000005898_43690cztM0_level2_quad_clean.evt
Size (bytes)838,601,280113,336,640
Size799.8 MB 108.1 MB
Events in quadrant A11,941,068757,724
Events in quadrant B3,983,086834,517
Events in quadrant C8,966,318671,931
Events in quadrant D5,653,102714,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399582
B0160732
C03113213
D0211392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6469262240.531767%
B64692153.323543%
C6442208132.303632%
D64684837.467532%

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 7629 6470 2116 2116 27.74% 32.70%
B 7629 6470 78 78 1.02% 1.21%
C 7628 6444 1580 1580 20.71% 24.52%
D 7628 6469 298 298 3.91% 4.61%

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 15 222 5128938 33192.68 755 742 154.5
A 14 63 2536013 16409.75 755 742 154.5
A 10 83 863034 5581.26 755 742 154.5
B 5 235 350872 2217.96 808 786 157.8
B 10 128 125233 788.43 808 786 157.8
B 4 206 85715 538.06 808 786 157.8
C 15 157 2340036 14971.07 670 676 156.3
C 15 142 2025356 12957.23 670 676 156.3
C 3 233 1796359 11491.73 670 676 156.3
D 7 80 452713 2274.46 781 757 198.7
D 14 210 345277 1733.79 781 757 198.7
D 5 235 262025 1314.83 781 757 198.7

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