ASTROSAT CZTI

Data Quality Report

Orbit 03971

Creation date: 2024-06-27T14:35:49.686045
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/AS1G05_229T02_9000000508_03971cztM0_level2.evt modeM0/AS1G05_229T02_9000000508_03971cztM0_level2_quad_clean.evt
Size (bytes)560,718,72078,399,360
Size534.7 MB 74.8 MB
Events in quadrant A4,177,164458,994
Events in quadrant B4,362,193460,622
Events in quadrant C3,842,199455,112
Events in quadrant D4,052,419439,404

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179006
B0180535
C01704110
D0177985

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80665136.360030%
B80664735.864121%
C80643354.154266%
D80664195.194644%

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 8247 8070 30 30 0.36% 0.37%
B 8247 8070 8 8 0.10% 0.10%
C 8247 8070 5 5 0.06% 0.06%
D 8247 8070 63 63 0.76% 0.78%

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 0 118 224130 1108.11 970 945 201.4
A 0 50 94196 462.99 970 945 201.4
A 15 236 71987 352.72 970 945 201.4
B 15 204 253152 1333.48 978 954 189.1
B 4 81 93596 489.84 978 954 189.1
B 14 167 70595 368.22 978 954 189.1
C 9 144 84797 376.89 950 951 222.5
C 8 128 21921 94.26 950 951 222.5
C 8 112 9298 37.52 950 951 222.5
D 2 232 211660 911.01 945 911 231.3
D 2 63 105587 452.48 945 911 231.3
D 13 239 47213 200.15 945 911 231.3

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