ASTROSAT CZTI

Data Quality Report

Orbit 47749

Creation date: 2024-07-27T11:40:12.472236
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/AS1C09_004T04_9000006346_47749cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47749cztM0_level2_quad_clean.evt
Size (bytes)422,225,28093,614,400
Size402.7 MB 89.3 MB
Events in quadrant A5,748,534625,515
Events in quadrant B3,779,430631,538
Events in quadrant C2,581,128616,918
Events in quadrant D3,077,664562,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211341
B0150061
C0118891
D0131271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56971432.510093%
B56982564.492804%
C5698150.263250%
D56981372.404352%

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 6847 5698 30 30 0.44% 0.53%
B 6848 5699 145 145 2.12% 2.54%
C 6848 5699 9 9 0.13% 0.16%
D 6848 5699 93 93 1.36% 1.63%

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 3242269 24637.32 628 615 131.6
A 13 248 33624 250.88 628 615 131.6
A 9 191 27031 200.77 628 615 131.6
B 0 200 625518 5160.68 620 599 121.1
B 4 171 501019 4132.55 620 599 121.1
B 0 245 179384 1476.44 620 599 121.1
C 12 2 91406 635.13 613 616 142.9
C 14 254 70857 491.37 613 616 142.9
C 0 207 10410 68.51 613 616 142.9
D 2 37 296994 1928.85 610 591 153.7
D 2 165 193362 1254.46 610 591 153.7
D 10 181 114857 743.59 610 591 153.7

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