ASTROSAT CZTI

Data Quality Report

Orbit 44621

Creation date: 2024-06-27T23:04:36.266931
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_009T03_9000006006_44621cztM0_level2.fits modeM0/AS1A13_009T03_9000006006_44621cztM0_level2_quad_clean.evt
Size (bytes)447,600,960110,093,760
Size426.9 MB 105.0 MB
Events in quadrant A5,193,009735,401
Events in quadrant B3,265,419764,867
Events in quadrant C3,245,442729,635
Events in quadrant D4,352,874644,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208558
B0140822
C0142494
D0175664

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65862433.689645%
B65881852.808136%
C65871131.715500%
D65874056.148474%

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 7558 6589 12 12 0.16% 0.18%
B 7558 6589 20 20 0.26% 0.30%
C 7558 6589 15 15 0.20% 0.23%
D 7558 6589 213 213 2.82% 3.23%

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 1940476 11946.97 782 766 162.4
A 15 223 146156 895.48 782 766 162.4
A 13 248 57715 350.75 782 766 162.4
B 0 190 64545 405.91 787 763 157.1
B 5 172 54041 339.06 787 763 157.1
B 12 111 19956 122.14 787 763 157.1
C 12 2 113970 618.29 771 776 183.1
C 3 233 88288 478.01 771 776 183.1
C 14 254 17015 88.7 771 776 183.1
D 13 249 621829 3291.78 748 729 188.7
D 1 52 444334 2351.07 748 729 188.7
D 13 153 223162 1178.88 748 729 188.7

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