ASTROSAT CZTI

Data Quality Report

Orbit 21859

Creation date: 2024-06-27T18:33:08.778534
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/AS1A07_118T01_9000003232_21859cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21859cztM0_level2_quad_clean.evt
Size (bytes)527,117,76095,037,120
Size502.7 MB 90.6 MB
Events in quadrant A3,524,036600,078
Events in quadrant B3,807,980615,333
Events in quadrant C3,557,537595,704
Events in quadrant D4,586,714566,758

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150612
B0158502
C0150732
D0183663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7181500.696282%
B71821201.670844%
C7182971.350599%
D71811732.409135%

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 9286 7183 4 4 0.04% 0.06%
B 9287 7184 12 12 0.13% 0.17%
C 9287 7184 1 1 0.01% 0.01%
D 9286 7183 168 168 1.81% 2.34%

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 4 2 27000 141.7 905 885 184.3
A 13 254 13344 67.6 905 885 184.3
A 0 226 7842 37.75 905 885 184.3
B 3 64 85931 489.65 909 888 173.7
B 0 230 81941 466.67 909 888 173.7
B 0 190 36714 206.27 909 888 173.7
C 14 238 136134 665.87 869 875 203.1
C 5 112 17458 81.64 869 875 203.1
C 0 10 14710 68.11 869 875 203.1
D 1 52 728297 3416.4 868 842 212.9
D 7 238 461059 2161.35 868 842 212.9
D 13 174 32862 150.38 868 842 212.9

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