ASTROSAT CZTI

Data Quality Report

Orbit 22850

Creation date: 2024-06-27T18:46:51.459525
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/AS1C05_013T03_9000003376_22850cztM0_level2.evt modeM0/AS1C05_013T03_9000003376_22850cztM0_level2_quad_clean.evt
Size (bytes)677,597,760151,920,000
Size646.2 MB 144.9 MB
Events in quadrant A3,906,7981,039,242
Events in quadrant B3,909,9561,053,200
Events in quadrant C3,825,2331,014,289
Events in quadrant D8,315,313916,346

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171450
B0172930
C0171080
D0304830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8320250.300481%
B8320460.552885%
C8320690.829327%
D8320162919.579327%

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 9090 8321 0 0 0.00% 0.00%
B 9090 8321 1 1 0.01% 0.01%
C 9090 8321 1 1 0.01% 0.01%
D 9090 8321 1431 1431 15.74% 17.20%

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 11 47 132597 675.29 971 952 194.9
A 13 252 21167 103.7 971 952 194.9
A 13 254 14742 70.74 971 952 194.9
B 0 190 60668 322.93 966 943 184.9
B 0 229 36419 191.81 966 943 184.9
B 12 111 21987 113.78 966 943 184.9
C 14 238 146769 676.83 927 933 215.5
C 7 247 52153 237.71 927 933 215.5
C 2 16 16759 73.45 927 933 215.5
D 1 52 4188487 19388.15 887 861 216.0
D 1 239 403313 1863.3 887 861 216.0
D 9 85 116169 533.86 887 861 216.0

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