ASTROSAT CZTI

Data Quality Report

Orbit 27275

Creation date: 2024-06-27T19:38:20.737517
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/AS1T03_243T01_9000003918_27275cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27275cztM0_level2_quad_clean.evt
Size (bytes)623,943,360105,546,240
Size595.0 MB 100.7 MB
Events in quadrant A3,628,498691,610
Events in quadrant B4,406,842694,287
Events in quadrant C3,575,353666,436
Events in quadrant D6,778,484623,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156830
B0177890
C0154400
D0252070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7483290.387545%
B74832313.086997%
C7484650.868520%
D74846909.219669%

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 7723 7484 2 2 0.03% 0.03%
B 7723 7484 114 114 1.48% 1.52%
C 7724 7485 2 2 0.03% 0.03%
D 7724 7485 617 617 7.99% 8.24%

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 12 96 54432 289.74 916 899 184.8
A 13 248 33396 175.89 916 899 184.8
A 13 254 12244 61.4 916 899 184.8
B 10 245 564964 3273.22 904 882 172.3
B 3 64 141137 813.86 904 882 172.3
B 15 32 98715 567.7 904 882 172.3
C 14 238 140117 676.71 871 874 205.8
C 15 208 37092 176.02 871 874 205.8
C 3 233 7654 32.95 871 874 205.8
D 1 52 3042144 14586.27 848 830 208.5
D 2 250 306114 1464.16 848 830 208.5
D 12 233 105385 501.45 848 830 208.5

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