ASTROSAT CZTI

Data Quality Report

Orbit 35956

Creation date: 2022-06-09T05:21:25.049209
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/AS1A11_080T01_9000005146_35956cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35956cztM0_level2_quad_clean.evt
Size (bytes)782,409,60073,768,320
Size746.2 MB 70.4 MB
Events in quadrant A3,949,859523,877
Events in quadrant B12,038,294339,287
Events in quadrant C4,231,071489,899
Events in quadrant D3,121,126511,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150153
B0392072
C01576810
D0124672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52484067.736280%
B5248469389.424543%
C524756610.787116%
D5248541.028963%

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 7282 5249 358 358 4.92% 6.82%
B 7282 5249 4404 4404 60.48% 83.90%
C 7282 5249 462 462 6.34% 8.80%
D 7282 5249 43 43 0.59% 0.82%

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 15 169 1208714 8943.51 668 659 135.1
A 10 83 147124 1084.31 668 659 135.1
A 8 144 9994 69.11 668 659 135.1
B 5 14 2902360 37954.96 400 391 76.5
B 5 31 2876719 37619.6 400 391 76.5
B 5 15 2866500 37485.95 400 391 76.5
C 9 187 1379975 9666.8 617 623 142.7
C 15 214 211813 1480.07 617 623 142.7
C 0 10 93462 650.64 617 623 142.7
D 8 195 174071 1091.83 649 633 158.9
D 2 250 156930 983.93 649 633 158.9
D 7 223 87646 547.77 649 633 158.9

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