ASTROSAT CZTI

Data Quality Report

Orbit 25695

Creation date: 2024-06-27T19:20:30.765505
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/AS1A09_008T03_9000003746_25695cztM0_level2.evt modeM0/AS1A09_008T03_9000003746_25695cztM0_level2_quad_clean.evt
Size (bytes)596,652,48077,719,680
Size569.0 MB 74.1 MB
Events in quadrant A6,282,273394,087
Events in quadrant B3,431,382526,289
Events in quadrant C3,365,250492,748
Events in quadrant D4,538,073474,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230280
B0141160
C0139570
D0177910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6677120918.106934%
B6678871.302785%
C6678961.437556%
D66781922.875112%

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 8947 6678 1059 1059 11.84% 15.86%
B 8948 6680 1 1 0.01% 0.01%
C 8948 6679 0 0 0.00% 0.00%
D 8948 6680 151 151 1.69% 2.26%

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 3363591 22083.7 757 745 152.3
A 13 254 7905 47.02 757 745 152.3
A 3 137 6906 40.46 757 745 152.3
B 0 219 23018 135.06 861 839 164.2
B 0 245 22510 131.96 861 839 164.2
B 12 111 19847 115.75 861 839 164.2
C 14 238 132166 679.42 822 827 193.3
C 3 233 25723 128.79 822 827 193.3
C 0 10 7480 34.42 822 827 193.3
D 7 80 567943 2816.91 822 798 201.3
D 1 52 514293 2550.44 822 798 201.3
D 8 195 226578 1121.41 822 798 201.3

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