ASTROSAT CZTI

Data Quality Report

Orbit 31623

Creation date: 2024-06-27T20:30:47.806001
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/AS1A10_123T01_9000004620_31623cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31623cztM0_level2_quad_clean.evt
Size (bytes)827,038,08074,661,120
Size788.7 MB 71.2 MB
Events in quadrant A8,246,165357,295
Events in quadrant B6,287,149510,135
Events in quadrant C3,640,413512,385
Events in quadrant D6,455,867446,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286604
B0229051
C0147671
D0233007

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6191253140.881925%
B61934957.992895%
C61931963.164864%
D619282813.372093%

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 7172 6193 1674 1674 23.34% 27.03%
B 7173 6194 235 235 3.28% 3.79%
C 7173 6194 85 85 1.18% 1.37%
D 7172 6193 815 815 11.36% 13.16%

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 0 13 5972769 50342.07 587 575 118.6
A 13 254 10135 80.59 587 575 118.6
A 3 137 5591 42.28 587 575 118.6
B 6 159 1953658 14175.2 721 702 137.8
B 10 245 498094 3610.24 721 702 137.8
B 5 172 440023 3188.74 721 702 137.8
C 3 233 607420 3613.15 712 717 167.9
C 14 238 113016 668.78 712 717 167.9
C 0 207 51020 299.57 712 717 167.9
D 8 195 1728468 10387.66 688 668 166.3
D 13 249 1487747 8940.43 688 668 166.3
D 11 176 168165 1007.0 688 668 166.3

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