ASTROSAT CZTI

Data Quality Report

Orbit 04784

Creation date: 2024-06-27T14:46:58.844887
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/AS1G05_156T09_9000000604_04784cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04784cztM0_level2_quad_clean.evt
Size (bytes)553,809,60065,508,480
Size528.2 MB 62.5 MB
Events in quadrant A2,718,703419,016
Events in quadrant B3,000,600409,375
Events in quadrant C5,211,525380,427
Events in quadrant D5,448,004368,833

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145552430
B0155592758
C0244105063
D0250664845

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014424
B014331
C014218
D014022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5916831.402975%
B58511412.409844%
C567583114.643172%
D57324467.780879%

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 7781 6219 0 0 0.00% 0.00%
B 7781 6175 56 56 0.72% 0.91%
C 7781 6010 670 670 8.61% 11.15%
D 7781 6054 515 515 6.62% 8.51%

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 8 15 88700 630.49 672 655 139.6
A 4 48 20161 139.68 672 655 139.6
A 0 50 12981 88.27 672 655 139.6
B 14 167 255625 1946.94 667 648 131.0
B 4 80 101375 769.12 667 648 131.0
B 15 54 28566 213.17 667 648 131.0
C 14 48 2905279 21144.46 586 587 137.4
C 1 16 11816 81.74 586 587 137.4
C 12 4 8101 54.7 586 587 137.4
D 11 132 2717485 17786.03 623 602 152.8
D 13 235 171008 1115.56 623 602 152.8
D 2 136 75620 491.1 623 602 152.8

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