ASTROSAT CZTI

Data Quality Report

Orbit 38274

Creation date: 2024-06-27T21:50:36.882983
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/AS1A07_145T01_9000005370_38274cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38274cztM0_level2_quad_clean.evt
Size (bytes)348,684,48092,194,560
Size332.5 MB 87.9 MB
Events in quadrant A2,630,621617,986
Events in quadrant B2,453,348643,573
Events in quadrant C2,603,463619,445
Events in quadrant D4,840,165568,392

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106893
B0103272
C0104782
D0177912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4882130.266284%
B4882290.594019%
C4882330.675952%
D4882551.126587%

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 7006 4883 6 6 0.09% 0.12%
B 7006 4883 13 13 0.19% 0.27%
C 7006 4883 29 29 0.41% 0.59%
D 7006 4883 45 45 0.64% 0.92%

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 358561 3133.84 575 564 114.2
A 12 189 21811 185.99 575 564 114.2
A 13 6 9186 75.48 575 564 114.2
B 0 229 79032 710.76 580 564 110.4
B 5 172 60840 545.98 580 564 110.4
B 4 232 17237 151.02 580 564 110.4
C 15 214 206695 1545.59 576 580 133.4
C 0 10 96854 721.93 576 580 133.4
C 2 16 27787 204.02 576 580 133.4
D 10 203 2234655 16364.32 567 553 136.5
D 10 233 113571 827.83 567 553 136.5
D 12 235 82729 601.92 567 553 136.5

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