ASTROSAT CZTI

Data Quality Report

Orbit 11293

Creation date: 2024-06-27T16:10:53.173703
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/AS1A04_144T01_9000001652_11293cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11293cztM0_level2_quad_clean.evt
Size (bytes)190,984,32016,623,360
Size182.1 MB 15.9 MB
Events in quadrant A1,669,03076,466
Events in quadrant B1,222,71492,360
Events in quadrant C1,007,62790,548
Events in quadrant D1,722,09273,826

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011365
B011361
C011872
D012069

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01834611886
B0134308161
C0116346757
D01700510235

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055
B044
C066
D077

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22521918.481350%
B2399140.583576%
C243900.000000%
D22651667.328918%

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 3345 2733 121 121 3.62% 4.43%
B 3430 2894 7 7 0.20% 0.24%
C 3517 2902 0 0 0.00% 0.00%
D 3538 2761 133 133 3.76% 4.82%

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 8 5 712358 13889.24 240 234 51.3
A 14 238 22374 431.81 240 234 51.3
A 1 162 4153 76.43 240 234 51.3
B 4 239 88073 1679.51 264 258 52.3
B 4 81 74625 1422.31 264 258 52.3
B 15 204 12391 232.05 264 258 52.3
C 13 61 1987 28.21 258 259 61.3
C 8 222 1075 13.32 258 259 61.3
C 3 202 644 6.28 258 259 61.3
D 10 253 504981 8902.06 229 222 56.7
D 8 195 223099 3930.72 229 222 56.7
D 2 120 48729 855.48 229 222 56.7

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