ASTROSAT CZTI

Data Quality Report

Orbit 36187

Creation date: 2022-06-10T11:08:45.574098
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/AS1T05_009T01_9000005168_36187cztM0_level2.evt modeM0/AS1T05_009T01_9000005168_36187cztM0_level2_quad_clean.evt
Size (bytes)304,223,04072,336,960
Size290.1 MB 69.0 MB
Events in quadrant A1,921,291475,884
Events in quadrant B2,142,926483,808
Events in quadrant C2,385,865487,693
Events in quadrant D2,487,744458,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083842
B090291
C097411
D0101721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A404190.222717%
B4041400.989854%
C4041521.286810%
D40411062.623113%

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 6014 4042 3 3 0.05% 0.07%
B 6014 4042 24 24 0.40% 0.59%
C 6014 4042 30 30 0.50% 0.74%
D 6014 4042 88 88 1.46% 2.18%

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 106941 1149.7 461 454 92.6
A 8 144 18787 197.93 461 454 92.6
A 9 143 11140 115.37 461 454 92.6
B 5 172 194722 2221.71 462 450 87.4
B 5 236 49444 560.3 462 450 87.4
B 5 255 45557 515.85 462 450 87.4
C 15 208 215958 2033.7 454 457 106.0
C 15 214 181153 1705.25 454 457 106.0
C 0 10 132330 1244.5 454 457 106.0
D 13 249 224519 2041.85 447 434 109.7
D 12 6 155264 1410.8 447 434 109.7
D 12 233 142980 1298.87 447 434 109.7

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