ASTROSAT CZTI

Data Quality Report

Orbit 48506

Creation date: 2024-09-16T13:27:31.902560
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_037T01_9000006432_48506cztM0_level2.fits modeM0/AS1A13_037T01_9000006432_48506cztM0_level2_quad_clean.evt
Size (bytes)483,249,600107,115,840
Size460.9 MB 102.2 MB
Events in quadrant A6,914,389704,466
Events in quadrant B3,271,572747,486
Events in quadrant C2,845,690719,650
Events in quadrant D4,330,768599,719

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255931
B0146121
C0137781
D0181361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67732153.174369%
B67741201.771479%
C6774250.369058%
D67745728.444051%

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 7808 6774 1 1 0.01% 0.01%
B 7809 6774 25 25 0.32% 0.37%
C 7809 6775 0 0 0.00% 0.00%
D 7809 6774 535 535 6.85% 7.90%

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 3993900 26117.28 734 719 152.9
A 12 189 77006 498.95 734 719 152.9
A 13 254 13151 81.31 734 719 152.9
B 5 255 258215 1762.65 741 717 146.1
B 8 234 24705 164.2 741 717 146.1
B 12 111 19380 127.75 741 717 146.1
C 13 61 4945 24.53 728 733 171.7
C 14 254 4626 22.67 728 733 171.7
C 3 233 3098 13.77 728 733 171.7
D 2 165 1391838 8127.42 685 662 171.2
D 7 38 190828 1110.97 685 662 171.2
D 2 234 28883 164.87 685 662 171.2

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