ASTROSAT CZTI

Data Quality Report

Orbit 20093

Creation date: 2024-06-27T18:11:12.243000
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/AS1A05_180T01_9000002992_20093cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20093cztM0_level2_quad_clean.evt
Size (bytes)536,469,12098,904,960
Size511.6 MB 94.3 MB
Events in quadrant A5,131,526615,398
Events in quadrant B3,540,930660,061
Events in quadrant C3,656,128626,272
Events in quadrant D3,465,315627,700

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194712
B0144812
C0147322
D0142202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A667671610.724985%
B6677811.213120%
C66771492.231541%
D6677660.988468%

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 8896 6678 389 389 4.37% 5.83%
B 8897 6679 0 0 0.00% 0.00%
C 8897 6679 17 17 0.19% 0.25%
D 8897 6679 9 9 0.10% 0.13%

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 14 238 1139535 6706.73 845 831 169.8
A 14 254 678245 3989.83 845 831 169.8
A 14 237 52287 303.07 845 831 169.8
B 0 183 49122 291.12 874 856 165.8
B 0 214 28091 164.27 874 856 165.8
B 12 111 19454 112.18 874 856 165.8
C 4 254 222815 1132.98 841 850 195.9
C 14 238 133562 677.4 841 850 195.9
C 3 233 21464 105.22 841 850 195.9
D 1 52 60586 284.71 864 843 209.8
D 2 184 52370 245.55 864 843 209.8
D 12 218 45860 214.53 864 843 209.8

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