ASTROSAT CZTI

Data Quality Report

Orbit 40393

Creation date: 2024-06-27T22:15:36.004050
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/AS1A12_056T02_9000005538_40393cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40393cztM0_level2_quad_clean.evt
Size (bytes)407,076,48095,693,760
Size388.2 MB 91.3 MB
Events in quadrant A3,145,826656,285
Events in quadrant B4,215,122669,709
Events in quadrant C2,916,137639,688
Events in quadrant D4,340,904526,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129613
B0165652
C0123072
D0169242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5795380.655738%
B57951051.811907%
C5795130.224331%
D579573012.597066%

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 7137 5796 20 20 0.28% 0.35%
B 7137 5796 30 30 0.42% 0.52%
C 7137 5796 4 4 0.06% 0.07%
D 7137 5796 201 201 2.82% 3.47%

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 502755 3857.31 635 623 130.2
A 13 248 92412 705.11 635 623 130.2
A 2 79 48206 365.53 635 623 130.2
B 7 202 1202510 9770.43 630 612 123.0
B 4 170 257268 2086.4 630 612 123.0
B 5 255 169142 1370.01 630 612 123.0
C 15 214 249589 1702.26 623 627 146.3
C 15 208 164080 1117.6 623 627 146.3
C 14 254 29291 195.99 623 627 146.3
D 12 227 1442080 9923.4 582 565 145.3
D 12 191 161898 1110.62 582 565 145.3
D 2 250 118914 814.72 582 565 145.3

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