ASTROSAT CZTI

Data Quality Report

Orbit 19893

Creation date: 2024-06-27T18:08:25.635311
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/AS1T03_118T01_9000002962_19893cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19893cztM0_level2_quad_clean.evt
Size (bytes)595,408,320113,544,000
Size567.8 MB 108.3 MB
Events in quadrant A4,176,526742,514
Events in quadrant B3,941,310753,998
Events in quadrant C4,048,937720,574
Events in quadrant D5,320,624663,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177142
B0168912
C0171262
D0212432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80102733.408240%
B80102423.021223%
C80102543.171036%
D80107038.776529%

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 8540 8010 51 51 0.60% 0.64%
B 8540 8011 3 3 0.04% 0.04%
C 8540 8010 0 0 0.00% 0.00%
D 8540 8011 526 526 6.16% 6.57%

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 5 16 369400 1828.61 987 965 201.5
A 3 137 8295 36.38 987 965 201.5
A 0 226 8221 36.01 987 965 201.5
B 4 216 41474 212.8 982 955 190.4
B 12 111 23739 119.66 982 955 190.4
B 11 111 20859 104.53 982 955 190.4
C 9 221 156249 684.26 953 957 226.9
C 14 238 144123 630.83 953 957 226.9
C 8 128 16657 69.18 953 957 226.9
D 1 52 1525426 6736.71 936 908 226.3
D 5 222 92360 404.12 936 908 226.3
D 12 218 83325 364.19 936 908 226.3

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