ASTROSAT CZTI

Data Quality Report

Orbit 12478

Creation date: 2024-06-27T16:27:57.959576
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/AS1A04_174T01_9000001850_12478cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12478cztM0_level2_quad_clean.evt
Size (bytes)687,384,00080,424,000
Size655.5 MB 76.7 MB
Events in quadrant A8,733,450469,364
Events in quadrant B3,826,949522,827
Events in quadrant C3,212,196513,895
Events in quadrant D4,599,542469,214

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306273
B0154882
C0137282
D0178692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6569128519.561577%
B65931201.820112%
C6593270.409525%
D65933725.642348%

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 7789 6572 737 737 9.46% 11.21%
B 7789 6595 59 59 0.76% 0.89%
C 7789 6595 10 10 0.13% 0.15%
D 7789 6595 372 372 4.78% 5.64%

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 13 251 5301000 33149.25 783 769 159.9
A 0 23 154299 960.22 783 769 159.9
A 1 162 74609 461.82 783 769 159.9
B 4 239 368292 2314.39 834 815 158.8
B 0 85 98494 615.19 834 815 158.8
B 0 187 33879 208.24 834 815 158.8
C 15 208 28952 149.74 810 819 187.9
C 7 238 24012 123.45 810 819 187.9
C 13 61 5803 26.53 810 819 187.9
D 1 52 1471370 7840.34 776 756 187.6
D 13 104 66932 352.81 776 756 187.6
D 13 249 29923 155.5 776 756 187.6

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