ASTROSAT CZTI

Data Quality Report

Orbit 43823

Creation date: 2024-06-27T22:56:13.958616
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/AS1A13_018T01_9000005906_43823cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43823cztM0_level2_quad_clean.evt
Size (bytes)761,515,200102,035,520
Size726.2 MB 97.3 MB
Events in quadrant A10,207,506481,542
Events in quadrant B4,291,416812,802
Events in quadrant C3,610,851800,422
Events in quadrant D9,571,190537,415

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349962
B0170212
C0148452
D0330252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556294244.874924%
B65563385.155583%
C65561131.723612%
D6556210932.169005%

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 7666 6556 2370 2370 30.92% 36.15%
B 7666 6557 147 147 1.92% 2.24%
C 7666 6556 37 37 0.48% 0.56%
D 7666 6556 1783 1783 23.26% 27.20%

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 15 223 5068024 38116.43 644 633 132.9
A 14 254 1630681 12261.07 644 633 132.9
A 10 83 872306 6556.64 644 633 132.9
B 5 235 555564 3470.02 806 782 159.9
B 5 172 309993 1934.03 806 782 159.9
B 4 170 124005 770.73 806 782 159.9
C 15 158 187913 998.1 799 805 187.5
C 3 233 144565 766.86 799 805 187.5
C 15 157 88138 465.86 799 805 187.5
D 12 2 1791849 10323.6 693 673 173.5
D 10 102 1622364 9346.75 693 673 173.5
D 12 33 1409362 8119.1 693 673 173.5

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