ASTROSAT CZTI

Data Quality Report

Orbit 34449

Creation date: 2022-02-10T17:52:12.128333
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/AS1A10_058T05_9000004918_34449cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34449cztM0_level2_quad_clean.evt
Size (bytes)585,034,56052,076,160
Size557.9 MB 49.7 MB
Events in quadrant A2,849,828309,226
Events in quadrant B4,323,832294,601
Events in quadrant C4,140,366302,350
Events in quadrant D6,028,916281,886

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117743
B0162902
C0165742
D0220082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555280.144092%
B555258610.554755%
C5552520.936599%
D55524207.564841%

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 7434 5553 0 0 0.00% 0.00%
B 7434 5552 457 457 6.15% 8.23%
C 7434 5553 38 38 0.51% 0.68%
D 7434 5553 416 416 5.60% 7.49%

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 36771 251.65 721 710 143.3
A 13 6 15407 102.56 721 710 143.3
A 9 143 10653 69.39 721 710 143.3
B 5 172 1268200 10142.56 670 652 125.0
B 0 229 184282 1469.36 670 652 125.0
B 0 190 66571 527.47 670 652 125.0
C 4 254 1147211 7212.45 693 700 159.0
C 15 214 236843 1485.52 693 700 159.0
C 0 10 37821 233.52 693 700 159.0
D 8 195 1801739 10917.59 683 666 165.0
D 7 80 560153 3391.45 683 666 165.0
D 2 249 261454 1580.82 683 666 165.0

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