ASTROSAT CZTI

Data Quality Report

Orbit 33870

Creation date: 2024-06-27T20:53:29.982141
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/AS1A11_046T03_9000004834_33870cztM0_level2.evt modeM0/AS1A11_046T03_9000004834_33870cztM0_level2_quad_clean.evt
Size (bytes)461,335,68071,254,080
Size440.0 MB 68.0 MB
Events in quadrant A2,505,399464,230
Events in quadrant B3,141,881460,271
Events in quadrant C2,944,153455,961
Events in quadrant D5,031,932417,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104163
B0124062
C0116432
D0184092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A513030.058480%
B51301422.768031%
C5130360.701754%
D51303196.218324%

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 7043 5131 0 0 0.00% 0.00%
B 7043 5131 83 83 1.18% 1.62%
C 7043 5131 31 31 0.44% 0.60%
D 7043 5131 303 303 4.30% 5.91%

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 6 15350 115.79 643 630 127.1
A 10 83 8877 64.87 643 630 127.1
A 13 254 7845 56.76 643 630 127.1
B 5 172 569049 4854.78 623 610 117.1
B 4 232 25130 209.41 623 610 117.1
B 0 199 20427 169.25 623 610 117.1
C 15 214 225104 1585.49 614 620 141.6
C 0 10 161807 1138.43 614 620 141.6
C 3 233 100872 708.06 614 620 141.6
D 8 195 1256836 8483.35 606 590 148.1
D 2 250 315932 2129.49 606 590 148.1
D 12 235 298435 2011.33 606 590 148.1

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