ASTROSAT CZTI

Data Quality Report

Orbit 45506

Creation date: 2024-06-27T23:13:01.006623
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_054T01_9000006098_45506cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45506cztM0_level2_quad_clean.evt
Size (bytes)483,563,520115,292,160
Size461.2 MB 110.0 MB
Events in quadrant A5,900,600753,388
Events in quadrant B3,428,159801,197
Events in quadrant C3,587,406757,372
Events in quadrant D4,439,388690,768

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227702
B0151222
C0157852
D0181202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70112603.708458%
B70111121.597490%
C70111692.410498%
D70111552.210812%

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 7651 7013 14 14 0.18% 0.20%
B 7651 7013 11 11 0.14% 0.16%
C 7651 7012 100 100 1.31% 1.43%
D 7651 7013 87 87 1.14% 1.24%

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 2800022 16964.26 789 773 165.0
A 13 248 23736 139.16 789 773 165.0
A 2 79 14890 85.55 789 773 165.0
B 5 172 124218 776.48 802 778 159.0
B 3 112 56775 352.24 802 778 159.0
B 4 170 24562 149.61 802 778 159.0
C 14 254 476806 2573.32 785 788 185.0
C 12 2 15402 79.0 785 788 185.0
C 10 20 13206 67.13 785 788 185.0
D 2 249 382220 1949.5 777 757 195.7
D 11 241 375181 1913.53 777 757 195.7
D 1 52 356062 1815.82 777 757 195.7

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