ASTROSAT CZTI

Data Quality Report

Orbit 14494

Creation date: 2024-06-27T16:55:59.413680
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/AS1G08_034T02_9000002136_14494cztM0_level2.evt modeM0/AS1G08_034T02_9000002136_14494cztM0_level2_quad_clean.evt
Size (bytes)566,357,76084,029,760
Size540.1 MB 80.1 MB
Events in quadrant A5,004,423484,897
Events in quadrant B3,820,167544,527
Events in quadrant C3,377,321541,832
Events in quadrant D4,481,682491,418

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193642
B0158441
C0143591
D0181261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A690779511.510062%
B69072643.822209%
C6907941.360938%
D69076389.237006%

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 7118 6910 572 572 8.04% 8.28%
B 7118 6910 68 68 0.96% 0.98%
C 7118 6910 0 0 0.00% 0.00%
D 7118 6909 346 346 4.86% 5.01%

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 23 1528375 9846.02 760 743 155.2
A 12 189 199709 1282.39 760 743 155.2
A 4 2 173101 1110.9 760 743 155.2
B 10 245 274741 1739.19 811 789 157.5
B 0 189 94842 597.1 811 789 157.5
B 0 85 79740 501.22 811 789 157.5
C 3 233 203369 1105.52 790 792 183.2
C 0 207 68772 370.99 790 792 183.2
C 8 128 11924 60.75 790 792 183.2
D 10 199 1230617 6496.76 754 735 189.3
D 12 110 263626 1388.7 754 735 189.3
D 10 70 55832 291.05 754 735 189.3

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