ASTROSAT CZTI

Data Quality Report

Orbit 38141

Creation date: 2024-06-27T21:48:54.843982
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/AS1C07_001T12_9000005366_38141cztM0_level2.fits modeM0/AS1C07_001T12_9000005366_38141cztM0_level2_quad_clean.evt
Size (bytes)309,147,84095,382,720
Size294.8 MB 91.0 MB
Events in quadrant A2,756,458644,790
Events in quadrant B2,618,276659,929
Events in quadrant C2,626,963636,282
Events in quadrant D3,031,677578,909

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115473
B0113442
C0110732
D0127912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5265190.360874%
B5265360.683761%
C5265120.227920%
D5265581.101614%

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 7118 5266 8 8 0.11% 0.15%
B 7118 5266 22 22 0.31% 0.42%
C 7118 5266 12 12 0.17% 0.23%
D 7118 5265 55 55 0.77% 1.04%

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 367678 3048.17 597 585 120.4
A 12 189 41314 338.19 597 585 120.4
A 15 223 16856 135.11 597 585 120.4
B 0 229 137053 1199.93 601 585 113.7
B 4 171 60578 527.5 601 585 113.7
B 4 232 27159 233.66 601 585 113.7
C 15 214 220316 1590.76 595 600 138.1
C 0 10 40975 292.32 595 600 138.1
C 3 233 29956 212.54 595 600 138.1
D 12 227 185894 1307.05 587 571 141.8
D 10 199 125247 879.32 587 571 141.8
D 1 52 104601 733.71 587 571 141.8

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