ASTROSAT CZTI

Data Quality Report

Orbit 20325

Creation date: 2024-06-27T18:13:54.663656
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/AS1A05_174T01_9000003008_20325cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20325cztM0_level2_quad_clean.evt
Size (bytes)487,016,64089,136,000
Size464.5 MB 85.0 MB
Events in quadrant A3,557,038562,242
Events in quadrant B3,438,982576,962
Events in quadrant C3,339,136554,386
Events in quadrant D3,955,671535,233

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148811
B0144641
C0140741
D0162851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67492093.096755%
B67491352.000296%
C67491542.281820%
D67493765.571196%

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 7424 6750 85 85 1.14% 1.26%
B 7424 6750 29 29 0.39% 0.43%
C 7424 6750 1 1 0.01% 0.01%
D 7424 6750 225 225 3.03% 3.33%

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 4 2 277662 1663.46 814 794 166.4
A 5 16 112581 671.63 814 794 166.4
A 14 238 21758 125.95 814 794 166.4
B 7 220 179638 1158.02 808 788 154.4
B 0 214 27001 169.72 808 788 154.4
B 0 230 20168 125.48 808 788 154.4
C 14 238 124578 669.95 788 795 184.8
C 0 207 64290 343.65 788 795 184.8
C 3 9 47640 253.54 788 795 184.8
D 1 52 812812 4182.98 801 778 194.1
D 9 1 80371 410.0 801 778 194.1
D 2 234 26934 134.74 801 778 194.1

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