ASTROSAT CZTI

Data Quality Report

Orbit 35724

Creation date: 2022-05-13T10:07:10.521745
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_029T05_9000005124_35724cztM0_level2.evt modeM0/AS1A09_029T05_9000005124_35724cztM0_level2_quad_clean.evt
Size (bytes)75,303,36021,107,520
Size71.8 MB 20.1 MB
Events in quadrant A555,005146,616
Events in quadrant B493,742147,237
Events in quadrant C615,475137,476
Events in quadrant D549,733134,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022182
B019761
C023621
D021701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93430.321199%
B93420.214133%
C934373.961456%
D934151.605996%

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 934 934 0 0 0.00% 0.00%
B 934 934 0 0 0.00% 0.00%
C 934 934 35 35 3.75% 3.75%
D 934 934 15 15 1.61% 1.61%

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 10 83 55764 2006.88 127 125 27.7
A 10 67 2001 67.67 127 125 27.7
A 13 254 1600 53.2 127 125 27.7
B 0 197 5225 201.17 123 120 25.4
B 5 255 4644 178.27 123 120 25.4
B 12 111 2607 98.0 123 120 25.4
C 0 10 81812 2900.64 115 116 28.2
C 15 214 43673 1546.51 115 116 28.2
C 0 207 36280 1284.01 115 116 28.2
D 13 249 37631 1202.03 120 117 31.2
D 10 118 17656 561.99 120 117 31.2
D 10 199 9687 306.64 120 117 31.2

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