ASTROSAT CZTI

Data Quality Report

Orbit 28462

Creation date: 2024-06-27T19:52:00.384727
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/AS1A10_101T21_9000004090_28462cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28462cztM0_level2_quad_clean.evt
Size (bytes)621,296,640148,962,240
Size592.5 MB 142.1 MB
Events in quadrant A4,435,6261,004,235
Events in quadrant B3,942,6971,030,267
Events in quadrant C3,752,799995,399
Events in quadrant D6,148,095930,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184820
B0170560
C0163890
D0239130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79251311.652997%
B7926760.958870%
C7926851.072420%
D79265236.598536%

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 8890 7927 92 92 1.03% 1.16%
B 8891 7928 16 16 0.18% 0.20%
C 8891 7927 0 0 0.00% 0.00%
D 8891 7928 453 453 5.10% 5.71%

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 791416 4209.58 937 918 187.8
A 13 254 13415 66.55 937 918 187.8
A 12 96 10936 53.35 937 918 187.8
B 10 245 191640 1069.88 939 914 178.3
B 0 230 41069 225.25 939 914 178.3
B 12 111 22552 121.38 939 914 178.3
C 14 238 147053 681.87 914 918 214.3
C 3 233 37679 171.53 914 918 214.3
C 13 61 6214 24.71 914 918 214.3
D 1 52 1264934 5992.24 888 864 211.0
D 8 195 853134 4040.13 888 864 211.0
D 12 233 227912 1076.31 888 864 211.0

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