ASTROSAT CZTI

Data Quality Report

Orbit 50679

Creation date: 2025-02-09T22:06:33.712855
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/AS1T05_241T01_9000006446_50679cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50679cztM0_level2_quad_clean.evt
Size (bytes)550,448,64099,276,480
Size524.9 MB 94.7 MB
Events in quadrant A4,054,250652,488
Events in quadrant B4,275,744710,377
Events in quadrant C7,148,944573,814
Events in quadrant D4,357,911584,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165122
B0175602
C0260234
D0178422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69481522.187680%
B69481992.864134%
C694792313.286311%
D69472353.382755%

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 7918 6948 92 92 1.16% 1.32%
B 7918 6948 111 111 1.40% 1.60%
C 7917 6947 829 829 10.47% 11.93%
D 7917 6947 202 202 2.55% 2.91%

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 10 253 368238 2028.34 736 717 181.2
A 4 3 219316 1206.45 736 717 181.2
A 8 38 180513 992.29 736 717 181.2
B 0 229 895378 5751.92 736 710 155.5
B 3 249 80585 513.53 736 710 155.5
B 10 246 55199 350.32 736 710 155.5
C 1 44 1691956 8870.43 691 686 190.7
C 15 174 565295 2961.28 691 686 190.7
C 12 252 515804 2701.71 691 686 190.7
D 7 96 595851 2976.26 719 694 200.0
D 2 249 219110 1092.26 719 694 200.0
D 1 47 71594 354.56 719 694 200.0

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