ASTROSAT CZTI

Data Quality Report

Orbit 48609

Creation date: 2024-09-23T12:17:59.814486
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_9000006436_48609cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48609cztM0_level2_quad_clean.evt
Size (bytes)478,846,080109,183,680
Size456.7 MB 104.1 MB
Events in quadrant A7,509,246690,419
Events in quadrant B3,532,433742,288
Events in quadrant C3,015,676727,711
Events in quadrant D3,121,561655,893

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272112
B0156722
C0145142
D0148582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70384436.294402%
B70382333.310600%
C7038480.682012%
D7038370.525718%

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 7663 7039 149 149 1.94% 2.12%
B 7663 7039 66 66 0.86% 0.94%
C 7663 7039 3 3 0.04% 0.04%
D 7663 7039 4 4 0.05% 0.06%

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 4102025 25962.58 747 729 158.0
A 13 248 502903 3178.93 747 729 158.0
A 13 254 12573 74.98 747 729 158.0
B 12 16 460356 3020.63 760 734 152.2
B 0 183 34163 219.69 760 734 152.2
B 12 111 19728 124.83 760 734 152.2
C 12 250 54987 303.49 755 759 178.7
C 14 67 9625 49.62 755 759 178.7
C 14 254 8883 45.47 755 759 178.7
D 2 165 108311 576.18 745 721 186.7
D 10 199 65149 345.04 745 721 186.7
D 2 234 32339 169.33 745 721 186.7

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