ASTROSAT CZTI

Data Quality Report

Orbit 46144

Creation date: 2024-06-27T23:19:38.850882
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/AS1A13_098T02_9000006174_46144cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46144cztM0_level2_quad_clean.evt
Size (bytes)626,189,760114,292,800
Size597.2 MB 109.0 MB
Events in quadrant A6,698,178754,735
Events in quadrant B4,777,939794,565
Events in quadrant C3,871,810781,394
Events in quadrant D7,268,905623,842

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247312
B0189182
C0165912
D0266582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72692873.948273%
B72692573.535562%
C7269680.935479%
D7269109115.008942%

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 8979 7271 40 40 0.45% 0.55%
B 8979 7271 46 46 0.51% 0.63%
C 8979 7271 22 22 0.25% 0.30%
D 8979 7271 877 877 9.77% 12.06%

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 3382022 19543.31 823 805 173.0
A 9 191 38258 216.48 823 805 173.0
A 14 235 30568 172.03 823 805 173.0
B 3 112 1122186 6719.83 831 804 166.9
B 5 185 188674 1125.8 831 804 166.9
B 0 155 95556 567.79 831 804 166.9
C 3 9 361243 1848.54 821 824 195.0
C 12 2 199225 1017.57 821 824 195.0
C 12 249 52893 267.06 821 824 195.0
D 2 37 1412463 7194.97 770 744 196.2
D 5 235 920618 4688.23 770 744 196.2
D 1 52 799483 4070.85 770 744 196.2

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