ASTROSAT CZTI

Data Quality Report

Orbit 28178

Creation date: 2024-06-27T19:48:54.061102
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/AS1A10_073T05_9000004068_28178cztM0_level2.evt modeM0/AS1A10_073T05_9000004068_28178cztM0_level2_quad_clean.evt
Size (bytes)568,742,400104,230,080
Size542.4 MB 99.4 MB
Events in quadrant A3,100,963707,298
Events in quadrant B4,063,398699,615
Events in quadrant C3,271,884677,678
Events in quadrant D6,342,780613,529

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136490
B0164300
C0141080
D0233900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6573240.365130%
B65732704.107713%
C65731211.840864%
D657389113.555454%

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 7618 6574 1 1 0.01% 0.02%
B 7618 6573 175 175 2.30% 2.66%
C 7618 6573 26 26 0.34% 0.40%
D 7618 6574 764 764 10.03% 11.62%

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 15 174 27995 170.89 795 777 159.3
A 13 254 10657 62.03 795 777 159.3
A 3 137 7771 43.91 795 777 159.3
B 10 245 949560 6390.21 783 763 148.5
B 12 111 18238 117.7 783 763 148.5
B 11 111 16587 106.58 783 763 148.5
C 15 208 149291 828.75 763 766 179.2
C 14 238 124439 690.08 763 766 179.2
C 3 233 25428 137.61 763 766 179.2
D 1 52 3250273 19053.3 714 695 170.6
D 2 250 151862 886.34 714 695 170.6
D 8 195 118301 689.56 714 695 170.6

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