ASTROSAT CZTI

Data Quality Report

Orbit 36372

Creation date: 2022-06-20T17:06:39.589839
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/AS1A11_097T24_9000005196_36372cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36372cztM0_level2_quad_clean.evt
Size (bytes)568,679,04051,240,960
Size542.3 MB 48.9 MB
Events in quadrant A2,853,683315,739
Events in quadrant B4,941,798289,835
Events in quadrant C2,817,549304,917
Events in quadrant D6,237,876256,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118063
B0182842
C0115782
D0222502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5485280.510483%
B548575313.728350%
C5485520.948040%
D5485110420.127621%

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 7157 5486 15 15 0.21% 0.27%
B 7156 5484 622 622 8.69% 11.34%
C 7156 5484 36 36 0.50% 0.66%
D 7156 5484 1097 1097 15.33% 20.00%

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 10 83 185763 1421.72 644 631 130.2
A 12 189 90211 687.93 644 631 130.2
A 9 143 82983 632.42 644 631 130.2
B 5 172 2109889 18110.11 599 584 116.5
B 0 182 188693 1615.07 599 584 116.5
B 0 189 96690 825.15 599 584 116.5
C 15 214 235214 1616.26 617 620 145.1
C 0 10 167457 1149.44 617 620 145.1
C 4 254 13012 85.38 617 620 145.1
D 2 250 2012848 14441.06 566 550 139.3
D 12 6 708094 5077.62 566 550 139.3
D 2 249 593309 4253.88 566 550 139.3

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