ASTROSAT CZTI

Data Quality Report

Orbit 12265

Creation date: 2024-06-27T16:24:42.789762
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_064T01_9000001814_12265cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12265cztM0_level2_quad_clean.evt
Size (bytes)646,139,52083,736,000
Size616.2 MB 79.9 MB
Events in quadrant A5,372,340528,224
Events in quadrant B6,127,270482,040
Events in quadrant C3,759,409534,282
Events in quadrant D3,847,175514,937

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208062
B0229181
C0155951
D0161501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68243214.703986%
B6824110616.207503%
C6824680.996483%
D68241632.388628%

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 7185 6826 97 97 1.35% 1.42%
B 7185 6824 673 673 9.37% 9.86%
C 7185 6826 47 47 0.65% 0.69%
D 7185 6826 144 144 2.00% 2.11%

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 13 251 1367467 8583.36 783 767 159.2
A 5 16 375405 2352.86 783 767 159.2
A 1 162 180184 1126.8 783 767 159.2
B 4 239 2876262 20763.14 727 708 138.5
B 11 51 138916 997.94 727 708 138.5
B 4 206 115424 828.31 727 708 138.5
C 15 208 387730 2146.48 773 775 180.3
C 3 233 287302 1589.4 773 775 180.3
C 4 175 40525 220.5 773 775 180.3
D 1 52 392307 2106.22 765 742 185.9
D 2 33 121885 651.62 765 742 185.9
D 10 199 84949 452.95 765 742 185.9

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