ASTROSAT CZTI

Data Quality Report

Orbit 26112

Creation date: 2024-06-27T19:24:50.221421
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_018T01_9000003774_26112cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26112cztM0_level2_quad_clean.evt
Size (bytes)520,041,60065,338,560
Size496.0 MB 62.3 MB
Events in quadrant A3,637,350398,924
Events in quadrant B3,593,319408,154
Events in quadrant C3,599,635379,120
Events in quadrant D4,491,746351,630

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144390
B0144780
C0144670
D0172950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6308691.093849%
B6308330.523145%
C6308961.521877%
D63073044.820041%

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 7713 6309 42 42 0.54% 0.67%
B 7713 6309 0 0 0.00% 0.00%
C 7713 6308 4 4 0.05% 0.06%
D 7712 6308 289 289 3.75% 4.58%

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 112969 621.75 915 903 180.2
A 13 254 8517 42.24 915 903 180.2
A 0 226 7854 38.56 915 903 180.2
B 12 111 19463 109.91 915 897 168.9
B 11 111 17682 99.37 915 897 168.9
B 14 111 16651 93.26 915 897 168.9
C 14 238 144707 727.41 866 876 197.7
C 3 233 36495 180.14 866 876 197.7
C 2 16 34102 168.04 866 876 197.7
D 12 233 615036 3058.1 852 832 200.8
D 1 52 595779 2962.22 852 832 200.8
D 13 168 31835 154.36 852 832 200.8

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