ASTROSAT CZTI

Data Quality Report

Orbit 17091

Creation date: 2024-06-27T17:31:56.008945
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_004T06_9000002536_17091cztM0_level2.evt modeM0/AS1A05_004T06_9000002536_17091cztM0_level2_quad_clean.evt
Size (bytes)441,077,76094,645,440
Size420.6 MB 90.3 MB
Events in quadrant A3,028,183614,893
Events in quadrant B3,516,214618,503
Events in quadrant C3,224,688595,374
Events in quadrant D3,148,273585,336

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134162
B0148142
C0136762
D0138222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6482330.509102%
B64821332.051836%
C6482711.095341%
D6482500.771367%

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 7607 6482 0 0 0.00% 0.00%
B 7607 6482 58 58 0.76% 0.89%
C 7607 6483 1 1 0.01% 0.02%
D 7607 6482 16 16 0.21% 0.25%

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 7300 41.46 785 768 157.6
A 0 226 7023 39.7 785 768 157.6
A 12 194 5798 31.93 785 768 157.6
B 15 32 170070 1155.56 785 763 146.5
B 4 48 150690 1023.29 785 763 146.5
B 7 220 42860 287.32 785 763 146.5
C 14 238 116046 654.11 760 767 176.2
C 3 233 108320 610.27 760 767 176.2
C 9 54 18775 102.18 760 767 176.2
D 10 70 86080 457.36 769 748 186.6
D 5 222 79937 424.44 769 748 186.6
D 15 0 28148 146.86 769 748 186.6

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