ASTROSAT CZTI

Data Quality Report

Orbit 26049

Creation date: 2024-06-27T19:24:16.318030
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/AS1A09_085T03_9000003764_26049cztM0_level2.evt modeM0/AS1A09_085T03_9000003764_26049cztM0_level2_quad_clean.evt
Size (bytes)628,499,520109,396,800
Size599.4 MB 104.3 MB
Events in quadrant A3,280,464718,119
Events in quadrant B3,407,823731,290
Events in quadrant C3,400,563711,531
Events in quadrant D8,467,007660,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144990
B0148970
C0147730
D0301100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7053480.680561%
B7054861.219166%
C70541201.701162%
D7054132318.755316%

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 8748 7054 1 1 0.01% 0.01%
B 8749 7055 1 1 0.01% 0.01%
C 8749 7056 0 0 0.00% 0.00%
D 8749 7055 1178 1178 13.46% 16.70%

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 0 13 29247 167.77 843 823 169.4
A 13 254 11561 63.38 843 823 169.4
A 3 137 7873 41.61 843 823 169.4
B 0 190 52269 321.26 843 822 160.1
B 0 229 44075 270.09 843 822 160.1
B 12 111 19844 118.78 843 822 160.1
C 14 238 130529 680.88 815 820 190.5
C 3 233 69805 362.12 815 820 190.5
C 8 128 11827 57.78 815 820 190.5
D 1 52 4759940 23649.13 753 739 201.2
D 1 3 613976 3047.26 753 739 201.2
D 12 233 155708 770.06 753 739 201.2

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