ASTROSAT CZTI

Data Quality Report

Orbit 43667

Creation date: 2024-06-27T22:54:18.156897
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/AS1A12_018T01_9000005896_43667cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43667cztM0_level2_quad_clean.evt
Size (bytes)1,224,149,760110,718,720
Size1.1 GB 105.6 MB
Events in quadrant A10,628,541853,242
Events in quadrant B4,367,775885,705
Events in quadrant C19,761,081353,710
Events in quadrant D9,947,194704,866

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370771
B0184171
C0640201
D0351482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A791381410.286870%
B7914991.250948%
C7914735392.911296%
D7913166020.978137%

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 7913 7913 386 386 4.88% 4.88%
B 7914 7914 27 27 0.34% 0.34%
C 7914 7914 6494 6494 82.06% 82.06%
D 7913 7913 1271 1271 16.06% 16.06%

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 15 222 5197501 29409.11 854 836 176.7
A 10 83 939079 5309.73 854 836 176.7
A 15 223 849541 4803.02 854 836 176.7
B 4 206 192286 1121.73 886 860 170.7
B 0 230 124667 725.49 886 860 170.7
B 5 235 120835 703.04 886 860 170.7
C 15 142 15936701 173915.42 389 389 91.6
C 15 158 1591874 17368.12 389 389 91.6
C 15 157 319219 3479.44 389 389 91.6
D 12 6 1034669 4685.21 805 788 220.7
D 4 221 984356 4457.2 805 788 220.7
D 7 80 910454 4122.31 805 788 220.7

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