ASTROSAT CZTI

Data Quality Report

Orbit 23837

Creation date: 2024-06-27T18:59:12.344482
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_113T01_9000003526_23837cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23837cztM0_level2_quad_clean.evt
Size (bytes)598,196,16068,664,960
Size570.5 MB 65.5 MB
Events in quadrant A3,271,102416,955
Events in quadrant B3,389,394424,453
Events in quadrant C3,534,893409,560
Events in quadrant D7,492,594385,633

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137251
B0139871
C0146101
D0267851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6341811.277401%
B6342851.340271%
C63421211.907915%
D63424657.332072%

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 7496 6342 0 0 0.00% 0.00%
B 7497 6343 10 10 0.13% 0.16%
C 7497 6343 1 1 0.01% 0.02%
D 7497 6343 263 263 3.51% 4.15%

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 10593 57.27 848 830 170.5
A 0 226 7449 38.82 848 830 170.5
A 3 137 6973 36.03 848 830 170.5
B 3 64 54501 340.09 839 822 157.8
B 0 190 21556 131.36 839 822 157.8
B 12 111 18562 112.39 839 822 157.8
C 0 239 151106 796.38 815 822 188.7
C 14 238 131926 694.74 815 822 188.7
C 0 10 47611 247.94 815 822 188.7
D 8 195 2346871 11936.76 807 786 196.5
D 13 174 1109521 5641.19 807 786 196.5
D 1 52 904141 4596.22 807 786 196.5

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