ASTROSAT CZTI

Data Quality Report

Orbit 25872

Creation date: 2024-06-27T19:22:19.982849
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_068T01_9000003756_25872cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25872cztM0_level2_quad_clean.evt
Size (bytes)587,295,36087,295,680
Size560.1 MB 83.3 MB
Events in quadrant A3,695,857547,263
Events in quadrant B3,809,198544,041
Events in quadrant C3,817,482519,340
Events in quadrant D5,952,619508,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157940
B0162020
C0162230
D0228760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75371111.472735%
B75381842.440966%
C75381672.215442%
D75384996.619793%

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 8257 7539 2 2 0.02% 0.03%
B 8258 7540 28 28 0.34% 0.37%
C 8258 7540 4 4 0.05% 0.05%
D 8258 7540 361 361 4.37% 4.79%

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 122114 643.44 927 906 188.4
A 13 254 11999 58.89 927 906 188.4
A 3 137 9035 43.15 927 906 188.4
B 10 245 191569 1074.34 914 888 177.5
B 12 111 22682 122.79 914 888 177.5
B 11 111 20148 108.51 914 888 177.5
C 3 233 250719 1196.71 877 882 208.8
C 14 238 137504 654.41 877 882 208.8
C 14 128 11100 48.94 877 882 208.8
D 1 52 1896121 9073.22 870 847 208.9
D 7 80 650225 3108.76 870 847 208.9
D 12 233 108908 517.32 870 847 208.9

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