ASTROSAT CZTI

Data Quality Report

Orbit 02494

Creation date: 2024-06-27T14:18:39.937691
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/AS1T01_046T01_9000000372_02494cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02494cztM0_level2_quad_clean.evt
Size (bytes)472,057,920118,183,680
Size450.2 MB 112.7 MB
Events in quadrant A3,510,054798,526
Events in quadrant B3,577,989823,366
Events in quadrant C6,112,034689,492
Events in quadrant D3,671,893728,935

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161384
B0162243
C0237453
D0167773

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77322743.543714%
B77322753.556648%
C7732115414.924987%
D77332032.625113%

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 7787 7734 0 0 0.00% 0.00%
B 7787 7734 1 1 0.01% 0.01%
C 7787 7734 866 866 11.12% 11.20%
D 7788 7735 10 10 0.13% 0.13%

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 15 35973 189.5 902 881 185.2
A 12 194 10223 50.45 902 881 185.2
A 0 226 9779 48.05 902 881 185.2
B 5 172 29278 160.54 913 887 176.8
B 12 111 13145 69.31 913 887 176.8
B 10 244 12485 65.58 913 887 176.8
C 9 144 2846869 14790.18 823 822 192.4
C 8 112 9011 42.56 823 822 192.4
C 10 65 8925 42.11 823 822 192.4
D 2 184 90917 435.09 872 848 207.0
D 5 172 85980 411.24 872 848 207.0
D 9 41 69360 330.96 872 848 207.0

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