ASTROSAT CZTI

Data Quality Report

Orbit 29331

Creation date: 2024-06-27T20:02:49.336859
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_050T03_9000004216_29331cztM0_level2.evt modeM0/AS1A10_050T03_9000004216_29331cztM0_level2_quad_clean.evt
Size (bytes)1,026,411,84069,425,280
Size978.9 MB 66.2 MB
Events in quadrant A3,718,875473,594
Events in quadrant B4,245,742474,868
Events in quadrant C4,328,561460,272
Events in quadrant D18,279,710164,962

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158071
B0172861
C0177161
D0592871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75651171.546596%
B75662483.277822%
C75662172.868094%
D7566754299.682791%

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 7795 7566 4 4 0.05% 0.05%
B 7796 7567 64 64 0.82% 0.85%
C 7796 7567 13 13 0.17% 0.17%
D 7796 7567 6230 6230 79.91% 82.33%

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 1 113 20243 99.51 951 929 194.1
A 13 254 18777 91.95 951 929 194.1
A 15 174 14457 69.7 951 929 194.1
B 5 172 153749 850.75 938 915 179.6
B 10 245 131401 726.35 938 915 179.6
B 5 255 109765 605.92 938 915 179.6
C 3 233 542646 2526.96 906 914 214.4
C 14 238 156472 725.62 906 914 214.4
C 7 247 61505 282.63 906 914 214.4
D 12 33 14471483 157401.8 375 364 91.9
D 1 52 1456909 15842.78 375 364 91.9
D 12 17 299856 3257.56 375 364 91.9

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