ASTROSAT CZTI

Data Quality Report

Orbit 41719

Creation date: 2024-06-27T22:31:59.156991
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_077T12_9000005692_41719cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41719cztM0_level2_quad_clean.evt
Size (bytes)404,677,440101,456,640
Size385.9 MB 96.8 MB
Events in quadrant A3,294,314700,455
Events in quadrant B2,709,128720,695
Events in quadrant C3,407,523644,783
Events in quadrant D5,112,663595,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132182
B0117902
C0135052
D0192352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5866240.409137%
B586690.153427%
C58652434.143223%
D58653796.462063%

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 9573 5868 5 5 0.05% 0.09%
B 9573 5868 0 0 0.00% 0.00%
C 9572 5867 233 233 2.43% 3.97%
D 9572 5867 388 388 4.05% 6.61%

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 551737 3890.06 693 682 141.7
A 15 223 60177 419.99 693 682 141.7
A 3 137 7598 48.82 693 682 141.7
B 12 111 16850 122.14 682 663 132.5
B 11 111 15801 114.23 682 663 132.5
B 14 111 15561 112.42 682 663 132.5
C 0 10 624238 4104.92 650 656 151.9
C 15 214 236729 1554.02 650 656 151.9
C 14 67 10840 67.04 650 656 151.9
D 12 79 1569396 9866.37 656 639 159.0
D 13 249 576108 3619.29 656 639 159.0
D 2 249 312047 1958.54 656 639 159.0

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