ASTROSAT CZTI

Data Quality Report

Orbit 11758

Creation date: 2024-06-27T16:17:48.008413
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/AS1A04_113T03_9000001738_11758cztM0_level2.evt modeM0/AS1A04_113T03_9000001738_11758cztM0_level2_quad_clean.evt
Size (bytes)590,863,68098,994,240
Size563.5 MB 94.4 MB
Events in quadrant A4,073,121630,086
Events in quadrant B4,940,117621,133
Events in quadrant C3,313,782635,531
Events in quadrant D5,065,376595,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169002
B0193521
C0151511
D0200601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74141051.416240%
B74143805.125438%
C7414250.337200%
D74142813.790127%

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 7585 7417 2 2 0.03% 0.03%
B 7585 7417 181 181 2.39% 2.44%
C 7585 7417 0 0 0.00% 0.00%
D 7585 7417 165 165 2.18% 2.22%

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 1 162 174632 968.32 875 855 179.5
A 8 15 173598 962.55 875 855 179.5
A 1 178 97277 537.28 875 855 179.5
B 4 239 866686 5187.41 866 844 166.9
B 3 64 333135 1990.81 866 844 166.9
B 15 204 224289 1338.7 866 844 166.9
C 13 61 6296 27.58 848 851 197.4
C 12 4 4066 16.28 848 851 197.4
C 8 222 3983 15.86 848 851 197.4
D 1 52 822384 4068.06 839 815 202.0
D 8 195 489722 2420.86 839 815 202.0
D 10 157 183572 904.93 839 815 202.0

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