ASTROSAT CZTI

Data Quality Report

Orbit 10136

Creation date: 2024-06-27T15:55:27.888301
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_116T01_9000001460_10136cztM0_level2.evt modeM0/AS1A03_116T01_9000001460_10136cztM0_level2_quad_clean.evt
Size (bytes)566,196,480117,907,200
Size540.0 MB 112.4 MB
Events in quadrant A3,952,919758,240
Events in quadrant B4,246,373771,475
Events in quadrant C3,671,918759,864
Events in quadrant D4,727,060719,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173293
B0180792
C0166492
D0193382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80891331.644208%
B80891111.372234%
C8089240.296699%
D8089851.050810%

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 8854 8091 63 63 0.71% 0.78%
B 8854 8091 12 12 0.14% 0.15%
C 8854 8091 0 0 0.00% 0.00%
D 8854 8091 44 44 0.50% 0.54%

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 15 174 218152 1094.94 965 945 198.4
A 0 226 8840 39.8 965 945 198.4
A 12 194 8195 36.55 965 945 198.4
B 0 214 98467 523.09 972 950 186.4
B 4 81 93622 497.1 972 950 186.4
B 4 239 89839 476.81 972 950 186.4
C 8 222 8101 32.86 935 939 218.0
C 14 67 7793 31.45 935 939 218.0
C 13 61 7257 28.99 935 939 218.0
D 8 195 620552 2742.48 928 896 225.9
D 2 152 181615 799.83 928 896 225.9
D 7 71 163207 718.36 928 896 225.9

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