ASTROSAT CZTI

Data Quality Report

Orbit 16027

Creation date: 2024-06-27T17:16:58.633272
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/AS1T02_091T01_9000002368_16027cztM0_level2.evt modeM0/AS1T02_091T01_9000002368_16027cztM0_level2_quad_clean.evt
Size (bytes)511,914,240106,801,920
Size488.2 MB 101.9 MB
Events in quadrant A3,587,115690,284
Events in quadrant B4,160,732699,728
Events in quadrant C3,722,329674,239
Events in quadrant D3,536,270660,976

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153093
B0170582
C0154612
D0154532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7319420.573849%
B73191792.445689%
C73191061.448285%
D7319470.642164%

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 7680 7321 1 1 0.01% 0.01%
B 7680 7321 73 73 0.95% 1.00%
C 7680 7321 0 0 0.00% 0.00%
D 7680 7321 11 11 0.14% 0.15%

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 9 143 18395 93.63 921 903 186.8
A 12 96 17108 86.74 921 903 186.8
A 15 157 8666 41.55 921 903 186.8
B 15 222 288612 1633.01 921 900 176.2
B 7 220 107902 607.32 921 900 176.2
B 0 189 63965 357.94 921 900 176.2
C 14 238 138361 655.35 888 894 209.8
C 3 233 109515 517.83 888 894 209.8
C 13 61 6369 26.1 888 894 209.8
D 2 152 66579 297.29 897 872 221.0
D 7 38 29671 130.3 897 872 221.0
D 2 234 27023 118.32 897 872 221.0

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