ASTROSAT CZTI

Data Quality Report

Orbit 31203

Creation date: 2024-06-27T20:24:56.482488
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/AS1A10_103T02_9000004514_31203cztM0_level2.evt modeM0/AS1A10_103T02_9000004514_31203cztM0_level2_quad_clean.evt
Size (bytes)3,152,747,520471,663,360
Size2.9 GB 449.8 MB
Events in quadrant A15,963,0033,105,902
Events in quadrant B30,521,3762,925,424
Events in quadrant C16,887,1522,994,266
Events in quadrant D29,781,2922,879,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07080
B07080
C07080
D07080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0703116
B01167906
C0720926
D011301112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A346321350.389813%
B3463325537.371582%
C346335181.495683%
D3463217865.157080%

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 38252 34638 0 0 0.00% 0.00%
B 38253 34639 1350 1350 3.53% 3.90%
C 38253 34639 13 13 0.03% 0.04%
D 38252 34638 1154 1154 3.02% 3.33%

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 13 254 61063 69.43 4137 4042 821.3
A 3 137 42568 46.91 4137 4042 821.3
A 0 226 34596 37.2 4137 4042 821.3
B 6 159 9351834 12398.47 3977 3868 754.0
B 4 80 5048443 6690.76 3977 3868 754.0
B 0 190 228391 297.79 3977 3868 754.0
C 14 238 708554 759.27 3982 4002 927.9
C 10 22 291081 309.37 3982 4002 927.9
C 4 175 132087 138.03 3982 4002 927.9
D 8 195 10991135 11280.98 3904 3817 974.0
D 12 79 3274610 3358.21 3904 3817 974.0
D 2 250 368389 374.32 3904 3817 974.0

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