ASTROSAT CZTI

Data Quality Report

Orbit 45967

Creation date: 2024-06-27T23:18:18.110033
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_017T01_9000006148_45967cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45967cztM0_level2_quad_clean.evt
Size (bytes)653,348,160101,983,680
Size623.1 MB 97.3 MB
Events in quadrant A6,278,881701,516
Events in quadrant B9,382,169591,746
Events in quadrant C2,974,636725,612
Events in quadrant D5,065,864633,076

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229401
B0322731
C0132241
D0193974

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62493786.048968%
B6249176928.308529%
C6250160.256000%
D62493145.024804%

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 7464 6249 75 75 1.00% 1.20%
B 7464 6249 1454 1454 19.48% 23.27%
C 7465 6251 12 12 0.16% 0.19%
D 7464 6250 170 170 2.28% 2.72%

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 2676972 18792.54 696 684 142.4
A 15 223 889207 6239.09 696 684 142.4
A 7 3 15771 105.94 696 684 142.4
B 3 112 6446670 50493.85 661 643 127.7
B 15 54 240651 1880.06 661 643 127.7
B 0 199 25782 196.92 661 643 127.7
C 14 254 187275 1130.55 699 701 165.0
C 9 54 53040 317.15 699 701 165.0
C 11 16 6940 37.81 699 701 165.0
D 11 241 1864893 11113.27 678 658 167.7
D 12 2 239241 1422.26 678 658 167.7
D 1 52 115977 687.45 678 658 167.7

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