ASTROSAT CZTI

Data Quality Report

Orbit 35546

Creation date: 2022-04-26T10:48:56.237450
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/AS1A11_093T01_9000005090_35546cztM0_level2.evt modeM0/AS1A11_093T01_9000005090_35546cztM0_level2_quad_clean.evt
Size (bytes)720,276,480114,984,000
Size686.9 MB 109.7 MB
Events in quadrant A8,226,573686,039
Events in quadrant B4,095,152753,829
Events in quadrant C4,315,397768,113
Events in quadrant D4,643,264726,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297953
B0173732
C0173282
D0188672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7876171121.724225%
B78761361.726765%
C78761051.333164%
D78762132.704418%

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 10922 7878 1520 1520 13.92% 19.29%
B 10922 7878 91 91 0.83% 1.16%
C 10922 7878 70 70 0.64% 0.89%
D 10922 7878 137 137 1.25% 1.74%

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 15 169 4791405 28208.62 840 826 169.8
A 10 83 156337 915.7 840 826 169.8
A 13 6 16699 93.47 840 826 169.8
B 5 172 348752 1995.22 901 873 174.4
B 5 200 106341 604.9 901 873 174.4
B 4 81 31215 174.02 901 873 174.4
C 0 10 357064 1729.59 888 894 205.9
C 15 214 345413 1673.01 888 894 205.9
C 0 239 77995 374.41 888 894 205.9
D 10 118 390082 1834.5 877 854 212.2
D 8 195 311092 1462.21 877 854 212.2
D 2 250 275618 1295.01 877 854 212.2

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