ASTROSAT CZTI

Data Quality Report

Orbit 27540

Creation date: 2024-06-27T19:41:13.329884
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_038T23_9000003944_27540cztM0_level2.evt modeM0/AS1A09_038T23_9000003944_27540cztM0_level2_quad_clean.evt
Size (bytes)51,791,0406,989,760
Size49.4 MB 6.7 MB
Events in quadrant A359,91638,523
Events in quadrant B385,31638,985
Events in quadrant C377,15336,607
Events in quadrant D391,15136,396

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015310
B015780
C015450
D016260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76120.262812%
B76240.524934%
C76291.181102%
D76220.262467%

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 761 761 0 0 0.00% 0.00%
B 761 761 1 1 0.13% 0.13%
C 762 762 0 0 0.00% 0.00%
D 762 762 2 2 0.26% 0.26%

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 13 254 1193 51.98 93 90 21.2
A 3 137 894 37.89 93 90 21.2
A 0 226 760 31.58 93 90 21.2
B 10 245 14208 707.32 93 90 20.0
B 0 190 2333 112.37 93 90 20.0
B 12 111 2180 104.71 93 90 20.0
C 14 238 15319 644.21 92 92 23.6
C 2 16 1556 61.94 92 92 23.6
C 13 61 639 23.14 92 92 23.6
D 1 52 42626 1754.72 92 89 24.2
D 2 234 2879 115.09 92 89 24.2
D 7 80 2107 83.25 92 89 24.2

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