ASTROSAT CZTI

Data Quality Report

Orbit 12275

Creation date: 2024-06-27T16:24:50.216265
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/AS1G08_064T01_9000001814_12275cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12275cztM0_level2_quad_clean.evt
Size (bytes)531,204,48073,241,280
Size506.6 MB 69.8 MB
Events in quadrant A3,594,127459,507
Events in quadrant B5,700,854439,073
Events in quadrant C2,821,592463,631
Events in quadrant D3,572,347444,834

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144342
B0206801
C0120951
D0143391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58711422.418668%
B5871129622.074604%
C5871711.209334%
D58711262.146142%

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 7092 5873 12 12 0.17% 0.20%
B 7092 5873 727 727 10.25% 12.38%
C 7092 5873 1 1 0.01% 0.02%
D 7092 5873 44 44 0.62% 0.75%

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 5 16 156033 1037.22 739 724 149.7
A 1 162 118715 787.99 739 724 149.7
A 14 237 95732 634.5 739 724 149.7
B 4 239 2107684 17343.5 642 627 121.5
B 3 64 700736 5762.7 642 627 121.5
B 11 51 111313 911.07 642 627 121.5
C 14 234 22616 132.84 715 719 164.8
C 3 233 8860 49.39 715 719 164.8
C 13 61 5395 28.37 715 719 164.8
D 1 52 336182 1945.01 718 698 172.5
D 13 104 124920 720.19 718 698 172.5
D 10 50 77871 447.42 718 698 172.5

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