ASTROSAT CZTI

Data Quality Report

Orbit 32308

Creation date: 2024-06-27T20:38:41.674330
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_005T01_9000004700_32308cztM0_level2.evt modeM0/AS1A10_005T01_9000004700_32308cztM0_level2_quad_clean.evt
Size (bytes)619,715,52098,340,480
Size591.0 MB 93.8 MB
Events in quadrant A3,282,988661,529
Events in quadrant B5,490,593662,732
Events in quadrant C4,026,560626,275
Events in quadrant D5,550,448595,557

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136063
B0206142
C0160652
D0207842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6193320.516712%
B61931011.630874%
C61932484.004521%
D61932754.440497%

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 7523 6194 9 9 0.12% 0.15%
B 7523 6194 8 8 0.11% 0.13%
C 7523 6194 44 44 0.58% 0.71%
D 7523 6194 198 198 2.63% 3.20%

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 0 6 71843 440.18 812 797 161.4
A 12 189 33186 200.67 812 797 161.4
A 13 6 23284 139.32 812 797 161.4
B 6 159 1965547 13049.84 814 795 150.6
B 0 168 189738 1254.95 814 795 150.6
B 4 80 60844 398.84 814 795 150.6
C 3 233 536764 2958.43 782 788 181.2
C 0 10 200832 1104.18 782 788 181.2
C 14 238 132276 725.78 782 788 181.2
D 8 195 1652854 8947.4 777 758 184.6
D 13 249 381249 2060.66 777 758 184.6
D 14 52 173765 936.97 777 758 184.6

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