ASTROSAT CZTI

Data Quality Report

Orbit 06638

Creation date: 2024-06-27T15:09:34.712252
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/AS1A02_082T01_9000000898_06638cztM0_level2.evt modeM0/AS1A02_082T01_9000000898_06638cztM0_level2_quad_clean.evt
Size (bytes)536,472,00091,111,680
Size511.6 MB 86.9 MB
Events in quadrant A3,541,340564,536
Events in quadrant B3,770,333559,166
Events in quadrant C3,463,801556,763
Events in quadrant D4,946,010540,325

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159401
B0165171
C0158991
D0201901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77421932.492896%
B77422282.944975%
C77421531.976234%
D77421922.479979%

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 8032 7744 0 0 0.00% 0.00%
B 8032 7744 28 28 0.35% 0.36%
C 8032 7744 0 0 0.00% 0.00%
D 8032 7744 29 29 0.36% 0.37%

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 15 239 29164 151.9 903 881 186.2
A 14 111 20682 106.35 903 881 186.2
A 0 226 8450 40.65 903 881 186.2
B 4 48 111821 621.28 902 879 178.6
B 0 219 76235 421.99 902 879 178.6
B 4 81 67016 370.37 902 879 178.6
C 8 128 22486 104.35 877 882 207.0
C 8 112 8866 38.56 877 882 207.0
C 8 144 8510 36.84 877 882 207.0
D 8 195 1433151 6682.8 878 851 214.3
D 2 16 75689 349.18 878 851 214.3
D 1 18 56497 259.63 878 851 214.3

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