ASTROSAT CZTI

Data Quality Report

Orbit 35242

Creation date: 2022-04-05T09:01:19.616369
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/AS1C07_004T01_9000005052_35242cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35242cztM0_level2_quad_clean.evt
Size (bytes)762,779,52085,176,000
Size727.4 MB 81.2 MB
Events in quadrant A3,687,022535,847
Events in quadrant B6,937,469506,634
Events in quadrant C4,030,627545,178
Events in quadrant D7,944,257474,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155763
B0255962
C0162822
D0288842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7431550.740143%
B7431101413.645539%
C7431660.888171%
D743191212.272911%

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 10537 7433 30 30 0.28% 0.40%
B 10537 7433 624 624 5.92% 8.39%
C 10537 7433 44 44 0.42% 0.59%
D 10537 7433 760 760 7.21% 10.22%

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 7 3 144035 812.01 876 859 176.3
A 10 83 113595 639.37 876 859 176.3
A 13 6 25631 140.49 876 859 176.3
B 5 236 2449724 15436.67 831 809 158.6
B 5 172 1051622 6623.77 831 809 158.6
B 4 232 87429 546.01 831 809 158.6
C 0 10 373266 1886.81 847 851 197.4
C 15 214 308816 1560.28 847 851 197.4
C 9 187 14999 71.68 847 851 197.4
D 7 80 2019444 10213.87 812 790 197.6
D 8 195 1456455 7365.29 812 790 197.6
D 13 249 378250 1909.85 812 790 197.6

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