ASTROSAT CZTI

Data Quality Report

Orbit 11375

Creation date: 2024-06-27T16:12:01.543961
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_022T02_9000001662_11375cztM0_level2.evt modeM0/AS1A04_022T02_9000001662_11375cztM0_level2_quad_clean.evt
Size (bytes)491,722,560108,077,760
Size468.9 MB 103.1 MB
Events in quadrant A3,265,848715,056
Events in quadrant B4,357,906692,241
Events in quadrant C2,919,499754,756
Events in quadrant D3,943,792694,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136692
B0168961
C0124691
D0156981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5961701.174300%
B59614377.330985%
C5961410.687804%
D59613025.066264%

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 7246 5962 0 0 0.00% 0.00%
B 7246 5962 277 277 3.82% 4.65%
C 7246 5962 0 0 0.00% 0.00%
D 7246 5962 193 193 2.66% 3.24%

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 138627 909.12 752 737 151.7
A 15 174 114616 750.81 752 737 151.7
A 8 15 57654 375.26 752 737 151.7
B 4 239 846698 6255.97 727 709 135.2
B 3 64 339968 2508.77 727 709 135.2
B 11 51 155612 1145.49 727 709 135.2
C 13 61 5382 26.38 749 754 175.4
C 3 202 1803 5.98 749 754 175.4
C -1 -1 -1 -1.0 749 754 175.4
D 1 52 403022 2374.74 727 714 169.4
D 2 120 183386 1078.27 727 714 169.4
D 14 34 175475 1031.58 727 714 169.4

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