ASTROSAT CZTI

Data Quality Report

Orbit 33635

Creation date: 2024-06-27T20:50:55.022574
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/AS1T04_076T01_9000004810_33635cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33635cztM0_level2_quad_clean.evt
Size (bytes)562,285,44053,156,160
Size536.2 MB 50.7 MB
Events in quadrant A2,691,381316,514
Events in quadrant B5,305,552296,708
Events in quadrant C4,286,032305,026
Events in quadrant D4,366,408298,601

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114902
B0192601
C0166651
D0170001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5606100.178380%
B5606104918.712094%
C56061662.961113%
D56062023.603282%

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 7189 5607 2 2 0.03% 0.04%
B 7189 5607 893 893 12.42% 15.93%
C 7189 5607 141 141 1.96% 2.51%
D 7189 5607 177 177 2.46% 3.16%

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 15 237 30358 218.86 677 662 135.7
A 15 169 25639 184.08 677 662 135.7
A 13 6 12819 89.6 677 662 135.7
B 5 172 2681573 22392.92 618 602 119.7
B 0 213 51168 422.35 618 602 119.7
B 0 190 27299 222.99 618 602 119.7
C 3 233 1182736 7782.66 651 657 151.9
C 15 214 257802 1693.01 651 657 151.9
C 0 10 256740 1686.02 651 657 151.9
D 8 195 716681 4032.38 651 637 177.6
D 2 250 267941 1505.31 651 637 177.6
D 7 223 199281 1118.66 651 637 177.6

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