ASTROSAT CZTI

Data Quality Report

Orbit 27954

Creation date: 2024-06-27T19:46:21.671285
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_016T01_9000004034_27954cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27954cztM0_level2_quad_clean.evt
Size (bytes)615,133,44075,222,720
Size586.6 MB 71.7 MB
Events in quadrant A3,653,163459,064
Events in quadrant B4,664,057456,544
Events in quadrant C3,638,272444,166
Events in quadrant D6,195,957426,120

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150450
B0184830
C0149150
D0231870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70621191.685075%
B70631492.109585%
C70631652.336118%
D70635898.339233%

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 7707 7062 28 28 0.36% 0.40%
B 7708 7063 19 19 0.25% 0.27%
C 7708 7063 1 1 0.01% 0.01%
D 7708 7063 471 471 6.11% 6.67%

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 82461 440.46 916 898 185.2
A 13 248 21999 113.95 916 898 185.2
A 13 254 11932 59.59 916 898 185.2
B 10 245 1063392 6109.08 902 879 173.9
B 0 230 57015 322.76 902 879 173.9
B 12 111 20818 114.64 902 879 173.9
C 14 238 143614 690.12 879 885 206.8
C 3 233 37517 177.12 879 885 206.8
C 15 208 28583 133.92 879 885 206.8
D 1 52 1386248 6678.95 862 841 207.4
D 7 80 799644 3850.97 862 841 207.4
D 8 195 390994 1880.9 862 841 207.4

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