ASTROSAT CZTI

Data Quality Report

Orbit 21461

Creation date: 2024-06-27T18:28:03.711578
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/AS1A05_117T01_9000003166_21461cztM0_level2.evt modeM0/AS1A05_117T01_9000003166_21461cztM0_level2_quad_clean.evt
Size (bytes)65,301,12014,457,600
Size62.3 MB 13.8 MB
Events in quadrant A364,89396,710
Events in quadrant B380,11298,805
Events in quadrant C367,48896,177
Events in quadrant D814,52889,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014761
B015351
C014971
D028971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A697101.434720%
B697213.012912%
C698253.581662%
D6989413.467049%

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 1617 698 0 0 0.00% 0.00%
B 1617 697 0 0 0.00% 0.00%
C 1618 698 0 0 0.00% 0.00%
D 1618 698 72 72 4.45% 10.32%

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 13 254 938 40.34 94 92 21.0
A 3 137 865 36.86 94 92 21.0
A 0 226 781 32.86 94 92 21.0
B 0 230 4851 224.78 94 92 21.2
B 0 197 3352 153.98 94 92 21.2
B 0 229 2427 110.29 94 92 21.2
C 14 238 14246 618.24 90 90 22.9
C 13 61 646 24.28 90 90 22.9
C 3 233 480 17.03 90 90 22.9
D 12 235 412003 17583.1 89 87 23.4
D 1 20 21560 916.6 89 87 23.4
D 14 35 16581 704.07 89 87 23.4

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