ASTROSAT CZTI

Data Quality Report

Orbit 22806

Creation date: 2024-06-27T18:46:01.313496
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/AS1A07_054T01_9000003370_22806cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22806cztM0_level2_quad_clean.evt
Size (bytes)1,383,125,760348,246,720
Size1.3 GB 332.1 MB
Events in quadrant A8,507,1212,397,989
Events in quadrant B8,815,1142,388,907
Events in quadrant C8,697,0582,295,595
Events in quadrant D14,611,8782,184,316

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379524
B0387604
C0382804
D0564575

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18602510.274164%
B186031250.671935%
C186032341.257862%
D1860215938.563595%

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 21022 18606 0 0 0.00% 0.00%
B 21023 18607 1 1 0.00% 0.01%
C 21023 18607 4 4 0.02% 0.02%
D 21022 18605 1040 1040 4.95% 5.59%

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 13 254 33730 71.96 2204 2159 438.7
A 0 226 18839 38.02 2204 2159 438.7
A 3 137 18663 37.62 2204 2159 438.7
B 0 190 145029 346.37 2193 2135 412.5
B 12 111 50028 116.09 2193 2135 412.5
B 11 111 43353 99.91 2193 2135 412.5
C 14 238 335621 677.64 2116 2123 492.1
C 0 207 49783 96.84 2116 2123 492.1
C 0 239 22331 41.06 2116 2123 492.1
D 1 52 5183719 10344.2 2074 2011 500.9
D 13 172 661013 1315.56 2074 2011 500.9
D 2 152 407933 810.34 2074 2011 500.9

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