ASTROSAT CZTI

Data Quality Report

Orbit 45708

Creation date: 2024-06-27T23:15:16.111338
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_028T01_9000006122_45708cztM0_level2.fits modeM0/AS1A13_028T01_9000006122_45708cztM0_level2_quad_clean.evt
Size (bytes)531,063,360116,596,800
Size506.5 MB 111.2 MB
Events in quadrant A6,311,580773,302
Events in quadrant B3,725,509807,883
Events in quadrant C4,753,993763,875
Events in quadrant D4,328,564702,047

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229222
B0152972
C0188605
D0175662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69433394.882616%
B69431972.837390%
C69424736.813598%
D69423454.969749%

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 7923 6943 4 4 0.05% 0.06%
B 7923 6943 5 5 0.06% 0.07%
C 7922 6942 290 290 3.66% 4.18%
D 7922 6942 207 207 2.61% 2.98%

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 3113765 18405.75 817 799 169.1
A 13 254 12581 69.66 817 799 169.1
A 13 248 11058 60.66 817 799 169.1
B 3 112 234229 1460.57 821 797 159.8
B 0 189 65055 402.06 821 797 159.8
B 0 183 59390 366.61 821 797 159.8
C 9 54 1456851 7751.39 798 802 187.8
C 1 241 125782 665.34 798 802 187.8
C 0 207 46622 243.93 798 802 187.8
D 13 249 783193 3907.7 805 780 200.2
D 2 249 117086 580.88 805 780 200.2
D 1 52 88937 440.29 805 780 200.2

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