ASTROSAT CZTI

Data Quality Report

Orbit 20210226_A10_021T10_9000004210_level2

Creation date: 2021-03-01T11:59:54.837842
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_021T10_9000004210cztM0_level2_bc.evt modeM0/AS1A10_021T10_9000004210cztM0_level2_quad_clean.evt
Size (bytes)1,894,870,080506,399,040
Size1.8 GB 482.9 MB
Events in quadrant A7,728,9793,434,316
Events in quadrant B9,417,6303,443,586
Events in quadrant C11,927,1873,131,030
Events in quadrant D26,027,6463,022,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06820
B06820
C06820
D06820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0708630
B0778810
C0891460
D01353570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A335664261.269141%
B335668512.535304%
C3356624587.322886%
D33566511615.241614%

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 40175 33566 0 0 0.00% 0.00%
B 40175 33565 21 21 0.05% 0.06%
C 40175 33560 0 0 0.00% 0.00%
D 40175 33564 1648 1648 4.10% 4.91%

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 64478 146.84 1997 1969 425.7
A 0 226 12867 25.6 1997 1969 425.7
A 12 194 12286 24.24 1997 1969 425.7
B 0 229 887870 2401.47 1971 1933 368.9
B 0 183 309612 834.01 1971 1933 368.9
B 10 245 154612 413.86 1971 1933 368.9
C 3 233 4536319 10477.59 1830 1827 432.8
C 14 254 275665 632.74 1830 1827 432.8
C 2 114 64896 145.73 1830 1827 432.8
D 1 52 10857916 24550.27 1840 1796 442.2
D 8 195 4710923 10649.32 1840 1796 442.2
D 7 80 755815 1705.16 1840 1796 442.2

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