ASTROSAT CZTI

Data Quality Report

Orbit 50148

Creation date: 2025-01-05T09:21:15.990636
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/AS1C09_003T01_9000006442_50148cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50148cztM0_level2_quad_clean.evt
Size (bytes)1,306,085,76072,288,000
Size1.2 GB 68.9 MB
Events in quadrant A9,186,901558,628
Events in quadrant B5,300,394732,948
Events in quadrant C16,541,425141,020
Events in quadrant D16,724,505219,933

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325453
B0210913
C0544063
D0550184

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7702193225.084394%
B77026178.010906%
C7702633382.225396%
D7701548371.198546%

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 7767 7703 1532 1532 19.72% 19.89%
B 7767 7704 314 314 4.04% 4.08%
C 7766 7701 5088 5088 65.52% 66.07%
D 7766 7702 5121 5121 65.94% 66.49%

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 0 98 2903673 15807.08 732 714 183.6
A 8 8 974972 5304.99 732 714 183.6
A 0 175 693217 3770.79 732 714 183.6
B 0 200 804062 4730.35 798 769 169.8
B 0 213 168342 986.79 798 769 169.8
B 1 255 167896 984.16 798 769 169.8
C 4 111 9408670 85201.24 385 381 110.4
C 15 230 1222627 11068.63 385 381 110.4
C 15 147 1070644 9692.28 385 381 110.4
D 15 168 3924485 25241.21 531 511 155.5
D 15 106 1898313 12207.73 531 511 155.5
D 15 142 1309648 8421.11 531 511 155.5

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