ASTROSAT CZTI

Data Quality Report

Orbit 20200111_A08_003T05_9000003426_level2

Creation date: 2025-12-08T04:59:38.480755
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/AS1A08_003T05_9000003426cztM0_level2.fits modeM0/AS1A08_003T05_9000003426cztM0_level2_quad_clean.evt
Size (bytes)428,690,880389,145,600
Size408.8 MB 371.1 MB
Events in quadrant A2,587,3762,199,299
Events in quadrant B2,563,6022,343,341
Events in quadrant C2,603,5542,235,063
Events in quadrant D2,173,6601,956,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01156470
B0937470
C0996690
D01507840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09080
B09080
C09080
D09080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4444933257.480483%
B444496721.511845%
C4444912342.776215%
D44449540812.166753%

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 49724 44443 0 0 0.00% 0.00%
B 49724 44447 0 0 0.00% 0.00%
C 49724 44406 0 0 0.00% 0.00%
D 49724 44423 0 0 0.00% 0.00%

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 0 29 2436 10.58 673 628 170.9
A 7 110 2051 8.33 673 628 170.9
A 0 30 1869 7.26 673 628 170.9
B 2 9 2075 10.57 676 644 135.4
B 2 8 1737 8.07 676 644 135.4
B 5 232 1723 7.97 676 644 135.4
C 1 80 1963 7.44 688 642 177.6
C 1 81 1957 7.4 688 642 177.6
C 12 241 1791 6.47 688 642 177.6
D 13 238 1582 6.04 622 566 168.3
D 6 231 1570 5.97 622 566 168.3
D 6 38 1496 5.53 622 566 168.3

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