ASTROSAT CZTI

Data Quality Report

Orbit 31170

Creation date: 2024-06-27T20:24:15.291950
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_058T02_9000004510_31170cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31170cztM0_level2_quad_clean.evt
Size (bytes)675,371,520104,598,720
Size644.1 MB 99.8 MB
Events in quadrant A3,752,379674,904
Events in quadrant B6,017,484674,046
Events in quadrant C3,868,040648,484
Events in quadrant D6,292,394631,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162392
B0236902
C0164492
D0242222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7740670.865633%
B77412373.061620%
C77401932.493540%
D77401622.093023%

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 8420 7742 0 0 0.00% 0.00%
B 8421 7743 2 2 0.02% 0.03%
C 8420 7742 1 1 0.01% 0.01%
D 8420 7742 22 22 0.26% 0.28%

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 13 254 12953 61.06 970 950 196.6
A 3 137 10182 46.96 970 950 196.6
A 0 226 7996 35.84 970 950 196.6
B 6 159 2153908 11570.46 961 936 186.1
B 0 190 55033 290.73 961 936 186.1
B 12 111 23638 122.0 961 936 186.1
C 14 238 150713 674.45 930 937 222.1
C 0 10 48347 213.49 930 937 222.1
C 2 114 17810 75.98 930 937 222.1
D 8 195 2402175 9940.7 925 906 241.6
D 12 79 232202 957.51 925 906 241.6
D 2 250 36166 145.97 925 906 241.6

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