ASTROSAT CZTI

Data Quality Report

Orbit 39045

Creation date: 2024-06-27T21:59:42.805362
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_077T06_9000005430_39045cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39045cztM0_level2_quad_clean.evt
Size (bytes)439,689,60091,419,840
Size419.3 MB 87.2 MB
Events in quadrant A6,881,620542,412
Events in quadrant B2,638,945649,076
Events in quadrant C2,788,236623,976
Events in quadrant D3,533,864562,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243882
B0116151
C0117861
D0144391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A557495617.151058%
B5574370.663796%
C557470.125583%
D55742123.803373%

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 7096 5575 970 970 13.67% 17.40%
B 7096 5575 13 13 0.18% 0.23%
C 7096 5575 4 4 0.06% 0.07%
D 7096 5575 182 182 2.56% 3.26%

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 15 222 3963278 33893.88 579 568 116.9
A 10 83 395377 3376.88 579 568 116.9
A 13 248 217812 1858.13 579 568 116.9
B 0 190 95882 804.34 613 596 118.5
B 5 172 82420 690.7 613 596 118.5
B 0 230 35307 293.01 613 596 118.5
C 15 214 233545 1650.4 603 607 141.1
C 15 208 71317 500.99 603 607 141.1
C 14 254 48590 339.97 603 607 141.1
D 1 47 572949 3945.08 592 577 145.1
D 12 227 396212 2726.92 592 577 145.1
D 2 249 88212 604.03 592 577 145.1

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