ASTROSAT CZTI

Data Quality Report

Orbit 21688

Creation date: 2024-06-27T18:31:07.976846
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/AS1A07_006T04_9000003210_21688cztM0_level2.evt modeM0/AS1A07_006T04_9000003210_21688cztM0_level2_quad_clean.evt
Size (bytes)554,544,00098,729,280
Size528.9 MB 94.2 MB
Events in quadrant A3,962,999613,061
Events in quadrant B3,817,817635,048
Events in quadrant C4,427,714601,097
Events in quadrant D4,051,957593,661

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170822
B0163982
C0183642
D0173032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78633324.222307%
B78633534.489381%
C78634816.117258%
D78632703.433804%

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 8018 7864 15 15 0.19% 0.19%
B 8018 7864 7 7 0.09% 0.09%
C 8018 7864 91 91 1.13% 1.16%
D 8018 7864 18 18 0.22% 0.23%

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 4 2 313953 1655.02 945 922 189.1
A 13 254 12989 63.8 945 922 189.1
A 3 137 8365 39.35 945 922 189.1
B 3 64 57201 311.3 948 923 180.8
B 12 111 22578 119.78 948 923 180.8
B 11 111 19703 103.88 948 923 180.8
C 8 208 727690 3469.75 901 905 209.5
C 14 238 143698 681.71 901 905 209.5
C 10 23 18127 82.22 901 905 209.5
D 1 52 282253 1270.14 918 888 221.5
D 2 136 72133 321.61 918 888 221.5
D 1 20 68084 303.34 918 888 221.5

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