ASTROSAT CZTI

Data Quality Report

Orbit 46397

Creation date: 2024-06-27T23:22:41.145791
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/AS1A13_070T04_9000006204_46397cztM0_level2.fits modeM0/AS1A13_070T04_9000006204_46397cztM0_level2_quad_clean.evt
Size (bytes)477,325,440114,264,000
Size455.2 MB 109.0 MB
Events in quadrant A6,608,895747,726
Events in quadrant B3,320,750784,208
Events in quadrant C3,829,962741,025
Events in quadrant D3,352,288686,909

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244714
B0149832
C0165312
D0154232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71751922.675958%
B7176580.808250%
C71761582.201784%
D7176500.696767%

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 8810 7177 30 30 0.34% 0.42%
B 8811 7178 7 7 0.08% 0.10%
C 8811 7178 109 109 1.24% 1.52%
D 8811 7178 42 42 0.48% 0.59%

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 10 83 3473097 21129.51 783 764 164.3
A 10 255 35226 209.7 783 764 164.3
A 15 14 31664 188.03 783 764 164.3
B 2 2 67065 426.75 791 766 155.4
B 0 189 31819 199.88 791 766 155.4
B 12 111 19827 122.69 791 766 155.4
C 14 254 549089 3008.96 773 777 182.2
C 12 2 150870 823.66 773 777 182.2
C 3 233 70023 380.0 773 777 182.2
D 13 249 95477 486.34 773 748 194.8
D 5 235 94405 480.83 773 748 194.8
D 12 233 46121 232.94 773 748 194.8

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