ASTROSAT CZTI

Data Quality Report

Orbit 38695

Creation date: 2024-06-27T21:55:14.013024
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/AS1A12_054T01_9000005392_38695cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38695cztM0_level2_quad_clean.evt
Size (bytes)453,208,32074,845,440
Size432.2 MB 71.4 MB
Events in quadrant A2,502,391580,414
Events in quadrant B2,399,021591,874
Events in quadrant C2,594,489555,883
Events in quadrant D8,909,195204,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101232
B0101641
C0107251
D0297211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A475860.126103%
B4758270.567465%
C4758140.294241%
D4758307364.585960%

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 6880 4759 3 3 0.04% 0.06%
B 6880 4759 8 8 0.12% 0.17%
C 6880 4759 7 7 0.10% 0.15%
D 6880 4759 2755 2755 40.04% 57.89%

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 10 83 306672 2740.24 556 545 111.7
A 13 248 43354 383.2 556 545 111.7
A 13 254 7154 59.16 556 545 111.7
B 4 171 183100 1727.16 548 533 105.7
B 12 111 12906 117.05 548 533 105.7
B 0 230 12892 116.92 548 533 105.7
C 15 214 192679 1549.95 535 539 124.0
C 14 254 171230 1376.92 535 539 124.0
C 3 110 73584 589.24 535 539 124.0
D 2 16 6749433 64075.56 434 421 105.3
D 5 222 144516 1368.05 434 421 105.3
D 12 227 92053 869.96 434 421 105.3

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