ASTROSAT CZTI

Data Quality Report

Orbit 26421

Creation date: 2024-06-27T19:28:49.386744
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_127T03_9000003820_26421cztM0_level2.evt modeM0/AS1A09_127T03_9000003820_26421cztM0_level2_quad_clean.evt
Size (bytes)541,054,08083,361,600
Size516.0 MB 79.5 MB
Events in quadrant A3,400,802514,765
Events in quadrant B3,642,642522,226
Events in quadrant C3,723,576493,956
Events in quadrant D5,119,723481,510

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150230
B0156310
C0157280
D0200930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73551291.753909%
B73551662.256968%
C73552042.773623%
D73563815.179445%

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 7545 7356 0 0 0.00% 0.00%
B 7545 7356 9 9 0.12% 0.12%
C 7545 7356 45 45 0.60% 0.61%
D 7546 7357 246 246 3.26% 3.34%

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 12 189 14894 80.1 876 856 175.3
A 13 254 10990 57.82 876 856 175.3
A 3 137 8186 41.82 876 856 175.3
B 0 189 67887 400.61 877 856 167.3
B 5 172 53792 316.37 877 856 167.3
B 0 244 36806 214.86 877 856 167.3
C 4 254 158284 794.08 844 849 198.3
C 14 238 133467 668.91 844 849 198.3
C 2 16 66453 330.9 844 849 198.3
D 1 52 1410221 6969.47 841 819 202.2
D 12 233 158785 781.14 841 819 202.2
D 7 80 151040 742.84 841 819 202.2

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