ASTROSAT CZTI

Data Quality Report

Orbit 25244

Creation date: 2024-06-27T19:15:26.353200
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_097T01_9000003692_25244cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25244cztM0_level2_quad_clean.evt
Size (bytes)591,134,40065,632,320
Size563.7 MB 62.6 MB
Events in quadrant A3,622,722399,108
Events in quadrant B3,631,119399,343
Events in quadrant C4,848,000379,544
Events in quadrant D5,374,712369,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147830
B0147180
C0186510
D0205890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6286991.574928%
B62871211.924606%
C628768610.911404%
D62872714.310482%

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 7611 6287 0 0 0.00% 0.00%
B 7612 6288 1 1 0.01% 0.02%
C 7612 6288 440 440 5.78% 7.00%
D 7612 6288 133 133 1.75% 2.12%

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 6 16 21245 110.82 930 912 183.5
A 3 1 18266 94.58 930 912 183.5
A 13 254 9822 48.56 930 912 183.5
B 0 190 49643 284.95 912 894 171.1
B 12 111 19303 107.6 912 894 171.1
B 11 111 17557 97.4 912 894 171.1
C 0 239 1149508 5862.36 848 856 195.9
C 2 16 175101 889.29 848 856 195.9
C 14 238 138555 702.77 848 856 195.9
D 8 195 1144027 5373.84 894 872 212.7
D 10 70 406653 1907.53 894 872 212.7
D 2 244 145435 679.57 894 872 212.7

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