ASTROSAT CZTI

Data Quality Report

Orbit 47698

Creation date: 2024-07-24T12:58:07.682232
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_082T01_9000006342_47698cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47698cztM0_level2_quad_clean.evt
Size (bytes)611,300,160129,697,920
Size583.0 MB 123.7 MB
Events in quadrant A8,502,044847,079
Events in quadrant B4,356,649881,479
Events in quadrant C3,788,305853,721
Events in quadrant D5,350,894778,903

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310562
B0184323
C0173075
D0215710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81424505.526898%
B81402192.690418%
C8139390.479174%
D81421742.137067%

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 8142 8142 7 7 0.09% 0.09%
B 8142 8141 52 52 0.64% 0.64%
C 8142 8141 19 19 0.23% 0.23%
D 8141 8141 137 137 1.68% 1.68%

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 4487442 22417.07 946 923 200.1
A 9 191 269853 1343.72 946 923 200.1
A 13 248 43861 214.54 946 923 200.1
B 0 200 383429 2020.29 944 913 189.3
B 4 21 149037 782.33 944 913 189.3
B 4 171 24973 127.08 944 913 189.3
C 12 2 119093 535.96 928 931 220.5
C 14 254 51255 228.26 928 931 220.5
C 13 61 6083 23.37 928 931 220.5
D 12 2 860284 3674.56 932 900 233.9
D 2 165 565382 2413.61 932 900 233.9
D 2 249 90688 383.92 932 900 233.9

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