ASTROSAT CZTI

Data Quality Report

Orbit 21246

Creation date: 2024-06-27T18:25:23.398389
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_037T01_9000003140_21246cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21246cztM0_level2_quad_clean.evt
Size (bytes)588,582,72094,659,840
Size561.3 MB 90.3 MB
Events in quadrant A3,098,480649,542
Events in quadrant B3,183,844657,507
Events in quadrant C2,987,518631,819
Events in quadrant D8,158,216517,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129761
B0132041
C0126221
D0283291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5868560.954329%
B5869871.482365%
C5869771.311978%
D5869176029.988073%

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 7043 5868 0 0 0.00% 0.00%
B 7044 5869 17 17 0.24% 0.29%
C 7044 5869 0 0 0.00% 0.00%
D 7044 5869 1683 1683 23.89% 28.68%

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 15 236 98458 623.91 773 758 156.6
A 5 168 13869 83.73 773 758 156.6
A 13 254 9450 55.51 773 758 156.6
B 3 64 85987 597.51 759 742 142.7
B 0 197 39703 273.09 759 742 142.7
B 0 245 36104 247.86 759 742 142.7
C 14 238 115668 678.92 729 736 169.3
C 0 207 13762 76.95 729 736 169.3
C 3 233 13003 72.46 729 736 169.3
D 14 34 3885778 24573.04 653 636 158.1
D 7 238 928377 5867.85 653 636 158.1
D 1 239 370920 2342.0 653 636 158.1

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