ASTROSAT CZTI

Data Quality Report

Orbit 37222

Creation date: 2024-06-27T21:37:06.678039
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_079T01_9000005284_37222cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37222cztM0_level2_quad_clean.evt
Size (bytes)488,278,08071,418,240
Size465.7 MB 68.1 MB
Events in quadrant A3,192,648441,668
Events in quadrant B2,913,917449,628
Events in quadrant C4,260,514437,835
Events in quadrant D4,023,002423,949

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132673
B0125732
C0164272
D0158762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58561242.117486%
B5856380.648907%
C58562534.320355%
D58561642.800546%

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 7169 5857 106 106 1.48% 1.81%
B 7169 5857 26 26 0.36% 0.44%
C 7169 5857 176 176 2.46% 3.00%
D 7169 5857 133 133 1.86% 2.27%

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 276859 2067.74 663 650 133.6
A 15 237 242074 1807.33 663 650 133.6
A 9 143 51305 379.21 663 650 133.6
B 5 172 91982 709.33 661 642 128.8
B 0 190 78104 601.55 661 642 128.8
B 0 213 59956 460.62 661 642 128.8
C 14 254 777831 5161.96 647 655 150.6
C 15 159 469142 3111.66 647 655 150.6
C 15 214 246583 1633.44 647 655 150.6
D 1 52 431865 2703.5 648 631 159.5
D 2 249 293848 1838.24 648 631 159.5
D 13 249 250820 1568.49 648 631 159.5

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