ASTROSAT CZTI

Data Quality Report

Orbit 00796

Creation date: 2024-06-27T14:03:02.754422
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/AS1P01_010T01_9000000112_00796cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00796cztM0_level2_quad_clean.evt
Size (bytes)933,459,84096,912,000
Size890.2 MB 92.4 MB
Events in quadrant A7,016,915636,284
Events in quadrant B7,578,042648,012
Events in quadrant C6,763,079622,326
Events in quadrant D6,505,259601,385

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252190
B0268350
C0244310
D0236920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6117160.261566%
B6117200.326958%
C611750.081739%
D6117110.179827%

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 7392 6118 197 197 2.67% 3.22%
B 7392 6118 249 249 3.37% 4.07%
C 7392 6118 111 111 1.50% 1.81%
D 7392 6118 116 116 1.57% 1.90%

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 15 171 39131 86.72 1805 1822 430.2
A 12 243 35941 79.3 1805 1822 430.2
A 10 133 13779 27.79 1805 1822 430.2
B 0 23 104012 229.31 1913 1926 445.2
B 5 191 47260 101.83 1913 1926 445.2
B 0 220 33448 70.81 1913 1926 445.2
C 15 241 42395 86.64 1702 1760 469.0
C 9 52 26716 53.21 1702 1760 469.0
C 3 111 24334 48.13 1702 1760 469.0
D 1 4 194897 386.61 1619 1674 499.8
D 13 25 100057 196.85 1619 1674 499.8
D 2 225 42313 81.31 1619 1674 499.8

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