ASTROSAT CZTI

Data Quality Report

Orbit 17272

Creation date: 2024-06-27T17:34:22.206417
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/AS1T03_059T01_9000002554_17272cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17272cztM0_level2_quad_clean.evt
Size (bytes)559,647,360108,734,400
Size533.7 MB 103.7 MB
Events in quadrant A3,690,697708,509
Events in quadrant B3,744,100709,758
Events in quadrant C3,661,484670,496
Events in quadrant D5,310,953649,335

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163612
B0164302
C0162612
D0213692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7981310.388423%
B7982480.601353%
C7982620.776748%
D79813304.134820%

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 9031 7983 1 1 0.01% 0.01%
B 9032 7984 1 1 0.01% 0.01%
C 9032 7984 0 0 0.00% 0.00%
D 9031 7983 255 255 2.82% 3.19%

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 8 29170 148.29 943 922 190.5
A 14 235 28687 145.75 943 922 190.5
A 0 226 8328 38.88 943 922 190.5
B 15 19 49013 262.53 944 917 183.2
B 12 111 22222 116.29 944 917 183.2
B 11 111 19307 100.38 944 917 183.2
C 14 238 139445 653.83 901 905 211.9
C 3 233 7259 29.99 901 905 211.9
C 13 61 6325 25.58 901 905 211.9
D 11 176 1231134 5670.76 894 868 216.9
D 10 70 340643 1566.15 894 868 216.9
D 13 189 248451 1141.2 894 868 216.9

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