ASTROSAT CZTI

Data Quality Report

Orbit 21051

Creation date: 2024-06-27T18:22:59.817231
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_025T04_9000003110_21051cztM0_level2.evt modeM0/AS1A05_025T04_9000003110_21051cztM0_level2_quad_clean.evt
Size (bytes)466,879,68096,226,560
Size445.3 MB 91.8 MB
Events in quadrant A3,169,841614,681
Events in quadrant B3,378,696627,892
Events in quadrant C3,193,848605,381
Events in quadrant D3,927,132584,608

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141042
B0145382
C0140662
D0163802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69031191.723888%
B69041492.158169%
C69041492.158169%
D69031432.071563%

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 7178 6905 0 0 0.00% 0.00%
B 7179 6906 15 15 0.21% 0.22%
C 7179 6906 0 0 0.00% 0.00%
D 7178 6905 47 47 0.65% 0.68%

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 13 252 24835 145.81 816 799 164.8
A 13 254 9754 54.32 816 799 164.8
A 0 226 7073 38.06 816 799 164.8
B 7 220 70985 450.06 811 790 156.0
B 3 64 36483 228.85 811 790 156.0
B 0 190 24269 150.54 811 790 156.0
C 14 238 123227 664.64 786 791 184.2
C 3 9 5881 27.63 786 791 184.2
C 13 61 5477 25.44 786 791 184.2
D 1 52 767906 3961.27 797 774 193.7
D 1 239 49828 253.3 797 774 193.7
D 13 172 32801 165.38 797 774 193.7

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