ASTROSAT CZTI

Data Quality Report

Orbit 42619

Creation date: 2024-06-27T22:42:17.753864
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/AS1A05_174T01_9000005820_42619cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42619cztM0_level2_quad_clean.evt
Size (bytes)345,441,60088,151,040
Size329.4 MB 84.1 MB
Events in quadrant A2,909,259606,833
Events in quadrant B2,517,703623,687
Events in quadrant C2,496,030606,479
Events in quadrant D4,479,775486,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115832
B0105522
C0100502
D0165972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4932220.446067%
B4932410.831306%
C493240.081103%
D493269614.111922%

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 7024 4933 13 13 0.19% 0.26%
B 7024 4933 25 25 0.36% 0.51%
C 7024 4933 1 1 0.01% 0.02%
D 7024 4933 630 630 8.97% 12.77%

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 519858 4370.39 585 574 118.8
A 2 79 49811 414.39 585 574 118.8
A 7 3 41400 343.6 585 574 118.8
B 0 245 168684 1503.3 577 562 111.8
B 12 0 38799 341.9 577 562 111.8
B 5 255 15869 136.87 577 562 111.8
C 15 214 207896 1539.77 580 584 134.6
C 14 254 23051 166.87 580 584 134.6
C 3 233 5061 33.25 580 584 134.6
D 2 249 1539388 11520.29 541 525 133.6
D 12 6 332062 2481.96 541 525 133.6
D 1 52 271766 2030.57 541 525 133.6

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