ASTROSAT CZTI

Data Quality Report

Orbit 17929

Creation date: 2024-06-27T17:42:44.053317
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_025T01_9000002670_17929cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17929cztM0_level2_quad_clean.evt
Size (bytes)469,402,56082,088,640
Size447.7 MB 78.3 MB
Events in quadrant A3,156,505517,106
Events in quadrant B3,283,643524,687
Events in quadrant C3,171,876492,982
Events in quadrant D4,148,241483,443

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137731
B0139901
C0137271
D0167651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6706701.043841%
B6707660.984047%
C6707761.133144%
D67071782.653944%

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 7716 6706 4 4 0.05% 0.06%
B 7717 6707 3 3 0.04% 0.04%
C 7717 6707 1 1 0.01% 0.01%
D 7717 6707 140 140 1.81% 2.09%

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 15 174 15173 87.1 816 797 165.1
A 0 226 6960 37.34 816 797 165.1
A 3 137 6055 31.85 816 797 165.1
B 0 189 39673 249.39 813 793 155.9
B 15 222 25193 156.51 813 793 155.9
B 12 111 18302 112.31 813 793 155.9
C 14 238 121390 662.98 776 778 181.9
C 3 233 12179 62.67 776 778 181.9
C 9 160 7409 36.45 776 778 181.9
D 7 238 964524 5057.99 784 760 190.5
D 10 70 77575 403.14 784 760 190.5
D 2 14 53350 276.0 784 760 190.5

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