ASTROSAT CZTI

Data Quality Report

Orbit 37123

Creation date: 2024-06-27T21:35:51.216017
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/AS1A09_138T04_9000005282_37123cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37123cztM0_level2_quad_clean.evt
Size (bytes)254,399,04062,637,120
Size242.6 MB 59.7 MB
Events in quadrant A1,879,523415,655
Events in quadrant B1,773,623416,764
Events in quadrant C1,882,729408,682
Events in quadrant D1,913,884392,296

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080831
B079071
C079291
D083891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3725280.751678%
B3725340.912752%
C3725220.590604%
D3725741.986577%

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 5007 3726 25 25 0.50% 0.67%
B 5007 3726 28 28 0.56% 0.75%
C 5007 3726 19 19 0.38% 0.51%
D 5007 3726 65 65 1.30% 1.74%

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 10 83 153610 1850.32 407 399 82.8
A 15 237 95893 1153.27 407 399 82.8
A 9 143 21294 252.35 407 399 82.8
B 5 172 91737 1138.48 404 394 80.2
B 5 184 33544 413.17 404 394 80.2
B 5 200 20929 255.94 404 394 80.2
C 15 214 157713 1655.78 400 404 95.0
C 0 10 79518 832.72 400 404 95.0
C 14 254 78892 826.14 400 404 95.0
D 13 249 267490 2712.97 397 386 98.5
D 1 47 34935 350.91 397 386 98.5
D 2 250 20792 207.26 397 386 98.5

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