ASTROSAT CZTI

Data Quality Report

Orbit 49850

Creation date: 2024-12-16T12:22:17.362952
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_037T01_9000006440_49850cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49850cztM0_level2_quad_clean.evt
Size (bytes)1,056,286,08047,246,400
Size1007.4 MB 45.1 MB
Events in quadrant A9,483,275361,596
Events in quadrant B3,526,420615,652
Events in quadrant C12,932,29021,070
Events in quadrant D12,681,6142,442

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323891
B0147991
C0426501
D0418981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6149240739.144576%
B61491412.293056%
C6149598397.300374%
D6149613399.739795%

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 7129 6149 2161 2161 30.31% 35.14%
B 7129 6150 91 91 1.28% 1.48%
C 7128 6148 3553 3553 49.85% 57.79%
D 7128 6148 3444 3444 48.32% 56.02%

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 3 84 2477278 17953.26 539 525 138.0
A 0 98 2108981 15283.58 539 525 138.0
A 4 4 600616 4349.88 539 525 138.0
B 4 206 343558 2491.38 644 622 137.6
B 0 229 300277 2176.95 644 622 137.6
B 10 28 126834 916.91 644 622 137.6
C 1 44 2975224 50788.4 183 182 58.6
C 15 189 1933731 33008.56 183 182 58.6
C 15 197 1125823 19216.37 183 182 58.6
D 8 129 4929714 98581.69 122 115 50.0
D 7 61 4227436 84537.6 122 115 50.0
D 7 126 659865 13193.62 122 115 50.0

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