ASTROSAT CZTI

Data Quality Report

Orbit 09858

Creation date: 2024-06-27T15:51:31.402861
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/AS1A03_117T06_9000001404_09858cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09858cztM0_level2_quad_clean.evt
Size (bytes)543,902,40096,192,000
Size518.7 MB 91.7 MB
Events in quadrant A3,805,698597,413
Events in quadrant B3,886,598614,229
Events in quadrant C4,241,942582,043
Events in quadrant D3,989,731558,793

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265
B0269
C02611
D0269

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219125214
B0221575431
C0247066702
D0236046139

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021452
B021446
C021448
D021452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8124230.283112%
B8042390.484954%
C7984720.901804%
D8044690.857782%

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 13163 8794 0 0 0.00% 0.00%
B 13163 8732 3 3 0.02% 0.03%
C 13163 8702 52 52 0.40% 0.60%
D 13163 8706 41 41 0.31% 0.47%

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 0 226 8926 39.65 986 967 200.7
A 12 194 7620 33.15 986 967 200.7
A 4 2 4921 19.7 986 967 200.7
B 4 81 56340 296.75 983 963 186.6
B 12 111 21928 112.35 983 963 186.6
B 11 111 18199 92.36 983 963 186.6
C 4 254 595103 2747.57 933 938 216.3
C 13 61 7040 28.22 933 938 216.3
C 9 54 5375 20.52 933 938 216.3
D 2 16 205107 846.08 926 907 241.3
D 10 172 109439 449.69 926 907 241.3
D 1 52 63501 259.35 926 907 241.3

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