ASTROSAT CZTI

Data Quality Report

Orbit 08795

Creation date: 2024-06-27T15:37:20.199665
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/AS1G07_010T03_9000001224_08795cztM0_level2.evt modeM0/AS1G07_010T03_9000001224_08795cztM0_level2_quad_clean.evt
Size (bytes)636,096,96084,882,240
Size606.6 MB 81.0 MB
Events in quadrant A4,020,167528,466
Events in quadrant B3,624,855537,905
Events in quadrant C3,499,021528,383
Events in quadrant D7,607,124448,313

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166719
B0155679
C0154416
D02767116

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75611071.415157%
B7559931.230321%
C7561490.648062%
D7561150519.904775%

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 9378 7563 3 3 0.03% 0.04%
B 9378 7563 0 0 0.00% 0.00%
C 9378 7563 0 0 0.00% 0.00%
D 9378 7563 1241 1241 13.23% 16.41%

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 8 5 385647 2058.01 921 901 187.0
A 13 248 47590 249.74 921 901 187.0
A 15 223 21761 111.58 921 901 187.0
B 4 173 22750 123.28 923 900 177.2
B 12 111 20919 112.95 923 900 177.2
B 11 111 17034 91.03 923 900 177.2
C 13 61 6766 28.09 894 900 208.8
C 12 4 6402 26.35 894 900 208.8
C 8 222 5024 19.75 894 900 208.8
D 2 16 4057785 18758.25 839 819 216.3
D 2 152 187254 862.02 839 819 216.3
D 1 52 60985 278.19 839 819 216.3

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