ASTROSAT CZTI

Data Quality Report

Orbit 29919

Creation date: 2024-06-27T20:08:56.225950
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_102T04_9000004286_29919cztM0_level2.evt modeM0/AS1A10_102T04_9000004286_29919cztM0_level2_quad_clean.evt
Size (bytes)608,368,32088,390,080
Size580.2 MB 84.3 MB
Events in quadrant A3,133,404595,391
Events in quadrant B4,750,257594,692
Events in quadrant C3,528,845568,285
Events in quadrant D6,625,405517,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127063
B0176211
C0142101
D0238061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5720731.276224%
B5721901.573152%
C57211172.045097%
D572184014.682748%

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 7030 5721 1 1 0.01% 0.02%
B 7031 5722 0 0 0.00% 0.00%
C 7031 5722 3 3 0.04% 0.05%
D 7031 5722 723 723 10.28% 12.64%

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 12 96 12135 71.97 804 790 157.6
A 13 254 11349 66.99 804 790 157.6
A 15 174 10366 60.75 804 790 157.6
B 6 159 1630267 11480.34 778 761 141.9
B 0 190 47029 325.97 778 761 141.9
B 12 111 16182 108.65 778 761 141.9
C 3 233 465796 2722.86 750 758 170.8
C 14 238 125185 728.54 750 758 170.8
C 2 114 13408 74.07 750 758 170.8
D 7 80 3077840 17856.54 740 725 172.3
D 8 195 362671 2100.38 740 725 172.3
D 13 138 152210 879.07 740 725 172.3

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