ASTROSAT CZTI

Data Quality Report

Orbit 30256

Creation date: 2024-06-27T20:12:46.672090
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_007T01_9000004350_30256cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30256cztM0_level2_quad_clean.evt
Size (bytes)794,695,68093,579,840
Size757.9 MB 89.2 MB
Events in quadrant A7,021,192545,111
Events in quadrant B8,518,055564,815
Events in quadrant C3,606,721615,399
Events in quadrant D4,432,326603,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255532
B0305361
C0150241
D0176731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7239147320.348114%
B7239162022.378782%
C72401592.196133%
D72401492.058011%

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 7789 7240 1207 1207 15.50% 16.67%
B 7788 7238 1073 1073 13.78% 14.82%
C 7790 7241 0 0 0.00% 0.00%
D 7790 7241 66 66 0.85% 0.91%

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 14 239 3866733 23569.62 815 799 164.0
A 13 254 12273 69.95 815 799 164.0
A 8 192 8099 44.51 815 799 164.0
B 6 36 3417265 21784.23 807 786 156.8
B 6 159 1891647 12056.55 807 786 156.8
B 4 80 28961 179.65 807 786 156.8
C 14 238 167426 822.1 861 864 202.6
C 14 254 41456 200.35 861 864 202.6
C 3 233 30173 144.66 861 864 202.6
D 1 52 757362 3717.79 867 849 203.5
D 8 195 256468 1256.21 867 849 203.5
D 5 222 57849 280.12 867 849 203.5

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