ASTROSAT CZTI

Data Quality Report

Orbit 34828

Creation date: 2022-03-08T08:42:43.325383
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/AS1C07_005T01_9000004992_34828cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34828cztM0_level2_quad_clean.evt
Size (bytes)943,608,96075,928,320
Size899.9 MB 72.4 MB
Events in quadrant A2,631,028654,644
Events in quadrant B13,304,570251,254
Events in quadrant C2,953,185653,615
Events in quadrant D9,339,107372,482

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107343
B0430662
C0114972
D0314362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519860.115429%
B51985198100.000000%
C5198460.884956%
D5198288655.521354%

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 7319 5199 0 0 0.00% 0.00%
B 7318 5197 5123 5123 70.01% 98.58%
C 7319 5199 32 32 0.44% 0.62%
D 7319 5199 2738 2738 37.41% 52.66%

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 10 83 50528 384.78 657 649 129.6
A 15 169 13193 96.77 657 649 129.6
A 13 6 9446 67.86 657 649 129.6
B 5 14 3847735 75469.5 269 263 51.0
B 5 31 3791242 74361.37 269 263 51.0
B 5 15 3783115 74201.95 269 263 51.0
C 15 214 241411 1624.91 648 653 148.2
C 0 10 137582 924.15 648 653 148.2
C 14 67 23687 155.46 648 653 148.2
D 14 52 6293656 56278.83 453 440 111.8
D 8 195 499742 4465.15 453 440 111.8
D 14 226 460477 4114.01 453 440 111.8

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