ASTROSAT CZTI

Data Quality Report

Orbit 31865

Creation date: 2024-06-27T20:33:40.292454
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/AS1A10_109T01_9000004646_31865cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31865cztM0_level2_quad_clean.evt
Size (bytes)579,493,440108,336,960
Size552.6 MB 103.3 MB
Events in quadrant A3,396,031722,070
Events in quadrant B5,488,305709,330
Events in quadrant C4,243,626683,453
Events in quadrant D3,944,175674,595

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147191
B0215021
C0172541
D0163111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7055260.368533%
B70561161.643991%
C70562082.947846%
D7056731.034580%

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 7350 7056 0 0 0.00% 0.00%
B 7351 7057 6 6 0.08% 0.09%
C 7351 7057 17 17 0.23% 0.24%
D 7351 7057 32 32 0.44% 0.45%

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 13 254 11028 56.98 878 861 178.4
A 3 137 8944 45.3 878 861 178.4
A 13 6 8412 42.32 878 861 178.4
B 6 159 1928663 11571.98 865 847 166.6
B 0 229 71499 424.1 865 847 166.6
B 10 247 36159 211.97 865 847 166.6
C 0 10 483738 2435.38 840 848 198.3
C 3 233 307391 1546.0 840 848 198.3
C 14 238 141987 711.81 840 848 198.3
D 8 195 242098 1177.67 849 826 204.9
D 12 79 226024 1099.21 849 826 204.9
D 1 52 78212 377.73 849 826 204.9

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