ASTROSAT CZTI

Data Quality Report

Orbit 20785

Creation date: 2024-06-27T18:19:34.291869
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/AS1A05_013T01_9000003070_20785cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20785cztM0_level2_quad_clean.evt
Size (bytes)471,078,720122,040,000
Size449.3 MB 116.4 MB
Events in quadrant A3,151,706852,358
Events in quadrant B3,435,195838,728
Events in quadrant C3,130,598810,907
Events in quadrant D4,159,303792,931

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01182
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01299517
B01403489
C01299128
D01615948

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57461192.071006%
B57401923.344948%
C57411572.734715%
D57412344.075945%

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 7064 5753 1 1 0.01% 0.02%
B 7065 5744 53 53 0.75% 0.92%
C 7064 5749 0 0 0.00% 0.00%
D 7064 5748 75 75 1.06% 1.30%

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 15 174 38250 235.59 810 799 159.0
A 0 226 7242 40.53 810 799 159.0
A 12 194 5949 32.4 810 799 159.0
B 7 220 136044 935.22 783 765 144.6
B 0 197 100695 690.85 783 765 144.6
B 0 219 73501 502.85 783 765 144.6
C 14 238 123277 707.59 762 768 173.1
C 7 247 31905 179.84 762 768 173.1
C 13 61 5254 25.91 762 768 173.1
D 1 20 469782 2519.65 784 764 186.1
D 1 52 455239 2441.52 784 764 186.1
D 7 38 127034 678.34 784 764 186.1

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