ASTROSAT CZTI

Data Quality Report

Orbit 31640

Creation date: 2024-06-27T20:31:02.724637
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/AS1T04_035T01_9000004622_31640cztM0_level2.evt modeM0/AS1T04_035T01_9000004622_31640cztM0_level2_quad_clean.evt
Size (bytes)676,206,72090,181,440
Size644.9 MB 86.0 MB
Events in quadrant A3,288,804632,028
Events in quadrant B6,618,734551,814
Events in quadrant C4,161,358577,042
Events in quadrant D5,987,469532,568

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138091
B0241451
C0166791
D0222431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6255590.943245%
B625691414.609974%
C62562754.395780%
D62565498.775575%

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 7440 6256 17 17 0.23% 0.27%
B 7441 6257 686 686 9.22% 10.96%
C 7441 6257 37 37 0.50% 0.59%
D 7441 6257 471 471 6.33% 7.53%

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 0 13 175116 1095.83 799 784 159.1
A 15 174 25844 157.52 799 784 159.1
A 13 254 12932 76.36 799 784 159.1
B 6 159 1748379 12520.74 732 716 139.6
B 5 172 1660050 11887.93 732 716 139.6
B 4 80 76795 545.05 732 716 139.6
C 3 233 920251 5328.47 736 738 172.6
C 14 238 155479 896.71 736 738 172.6
C 0 10 123541 711.63 736 738 172.6
D 8 195 1437212 8298.01 722 704 173.1
D 13 249 903041 5212.36 722 704 173.1
D 11 176 592053 3415.93 722 704 173.1

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