ASTROSAT CZTI

Data Quality Report

Orbit 39586

Creation date: 2024-06-27T22:06:29.184125
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_018T01_9000005488_39586cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39586cztM0_level2_quad_clean.evt
Size (bytes)533,747,52086,618,880
Size509.0 MB 82.6 MB
Events in quadrant A7,670,627492,459
Events in quadrant B2,618,126639,915
Events in quadrant C5,900,139533,035
Events in quadrant D3,128,146559,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266863
B0118232
C0212962
D0130572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5677141324.889907%
B5677370.651753%
C567783414.690858%
D5677390.686983%

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 7259 5678 1390 1390 19.15% 24.48%
B 7259 5678 21 21 0.29% 0.37%
C 7259 5678 750 750 10.33% 13.21%
D 7259 5678 26 26 0.36% 0.46%

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 4497406 37864.97 583 571 118.8
A 10 83 444010 3733.92 583 571 118.8
A 9 143 276569 2324.0 583 571 118.8
B 5 172 125411 1043.62 611 594 119.6
B 5 255 55928 462.66 611 594 119.6
B 0 230 16896 136.3 611 594 119.6
C 15 208 1851988 13972.8 569 572 132.5
C 9 187 1572812 11865.83 569 572 132.5
C 15 214 241751 1820.2 569 572 132.5
D 13 174 407474 2760.9 601 584 147.4
D 1 52 167890 1135.23 601 584 147.4
D 13 249 112715 760.85 601 584 147.4

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