ASTROSAT CZTI

Data Quality Report

Orbit 47977

Creation date: 2024-08-12T00:22:56.702234
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_062T02_9000006384_47977cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_47977cztM0_level2_quad_clean.evt
Size (bytes)592,882,560133,035,840
Size565.4 MB 126.9 MB
Events in quadrant A8,738,237866,556
Events in quadrant B4,033,797897,943
Events in quadrant C4,048,029872,478
Events in quadrant D4,460,100794,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322902
B0181272
C0184552
D0197992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85943934.572958%
B85942593.013731%
C85941832.129393%
D85952963.443863%

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 9809 8594 1 1 0.01% 0.01%
B 9809 8594 21 21 0.21% 0.24%
C 9809 8594 29 29 0.30% 0.34%
D 9810 8595 138 138 1.41% 1.61%

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 4991142 25133.8 948 927 198.5
A 0 31 77507 385.7 948 927 198.5
A 3 137 11454 53.02 948 927 198.5
B 5 32 58968 302.98 953 921 191.6
B 7 221 56251 288.8 953 921 191.6
B 5 255 48706 249.42 953 921 191.6
C 14 254 300691 1337.13 945 949 224.2
C 12 2 38481 167.43 945 949 224.2
C 1 3 15647 65.57 945 949 224.2
D 2 249 562089 2383.77 943 914 235.4
D 11 224 131680 555.47 943 914 235.4
D 7 204 80932 339.9 943 914 235.4

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