ASTROSAT CZTI

Data Quality Report

Orbit 28056

Creation date: 2024-06-27T19:47:34.337628
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/AS1A10_057T02_9000004054_28056cztM0_level2.evt modeM0/AS1A10_057T02_9000004054_28056cztM0_level2_quad_clean.evt
Size (bytes)633,044,16085,605,120
Size603.7 MB 81.6 MB
Events in quadrant A3,842,350539,680
Events in quadrant B3,673,527536,602
Events in quadrant C4,346,788511,959
Events in quadrant D6,813,317494,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159860
B0154280
C0174980
D0252990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73181391.899426%
B73181502.049740%
C73183004.099481%
D73186038.239956%

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 7703 7318 5 5 0.06% 0.07%
B 7703 7318 4 4 0.05% 0.05%
C 7703 7318 84 84 1.09% 1.15%
D 7702 7317 430 430 5.58% 5.88%

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 214667 1154.34 921 901 185.2
A 12 96 61821 328.97 921 901 185.2
A 13 254 13175 66.28 921 901 185.2
B 4 200 27647 155.69 907 884 171.9
B 10 245 21690 121.03 907 884 171.9
B 12 111 21008 117.06 907 884 171.9
C 3 233 825203 4044.63 867 869 203.8
C 14 238 138512 675.35 867 869 203.8
C 13 61 6076 25.55 867 869 203.8
D 8 195 2297085 11162.65 866 842 205.7
D 1 52 645759 3135.11 866 842 205.7
D 2 250 420952 2042.27 866 842 205.7

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