ASTROSAT CZTI

Data Quality Report

Orbit 22145

Creation date: 2024-06-27T18:37:24.150026
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/AS1T03_145T01_9000003278_22145cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22145cztM0_level2_quad_clean.evt
Size (bytes)478,543,68069,621,120
Size456.4 MB 66.4 MB
Events in quadrant A3,427,810418,095
Events in quadrant B3,503,397428,315
Events in quadrant C3,528,224414,523
Events in quadrant D3,605,019406,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140492
B0142612
C0145382
D0147822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63111021.616226%
B63111101.742988%
C63111552.456029%
D6311991.568690%

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 7576 6312 0 0 0.00% 0.00%
B 7576 6312 1 1 0.01% 0.02%
C 7576 6312 0 0 0.00% 0.00%
D 7576 6312 23 23 0.30% 0.36%

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 18635 102.44 883 869 173.4
A 13 254 10608 56.16 883 869 173.4
A 3 1 8884 46.22 883 869 173.4
B 12 111 19218 112.93 883 865 162.5
B 10 246 18377 107.75 883 865 162.5
B 11 111 17116 100.0 883 865 162.5
C 14 238 138802 703.99 859 870 195.9
C 10 22 32848 163.21 859 870 195.9
C 13 61 5862 25.48 859 870 195.9
D 7 223 254603 1229.13 867 844 206.5
D 1 52 60519 289.05 867 844 206.5
D 2 234 26486 124.2 867 844 206.5

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