ASTROSAT CZTI

Data Quality Report

Orbit 31093

Creation date: 2024-06-27T20:23:16.280889
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_109T01_9000004492_31093cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31093cztM0_level2_quad_clean.evt
Size (bytes)576,388,800124,044,480
Size549.7 MB 118.3 MB
Events in quadrant A3,451,756843,370
Events in quadrant B5,293,432848,996
Events in quadrant C3,969,061826,936
Events in quadrant D4,320,641803,117

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142802
B0195562
C0160002
D0175742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6222761.221472%
B62221953.134041%
C62223275.255545%
D6222921.478624%

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 7582 6223 2 2 0.03% 0.03%
B 7582 6223 3 3 0.04% 0.05%
C 7582 6223 64 64 0.84% 1.03%
D 7582 6223 6 6 0.08% 0.10%

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 12881 68.5 889 876 175.2
A 15 174 12004 63.5 889 876 175.2
A 12 96 10334 53.97 889 876 175.2
B 6 159 1705616 10350.69 880 860 164.7
B 0 229 55783 333.47 880 860 164.7
B 0 230 36975 219.28 880 860 164.7
C 0 10 327891 1645.56 864 876 198.7
C 14 238 141885 709.57 864 876 198.7
C 10 22 105255 525.24 864 876 198.7
D 13 174 502393 2442.17 877 859 205.4
D 8 195 437854 2127.9 877 859 205.4
D 2 250 35300 167.71 877 859 205.4

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