ASTROSAT CZTI

Data Quality Report

Orbit 20483

Creation date: 2024-06-27T18:15:55.114133
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/AS1A05_208T03_9000003026_20483cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20483cztM0_level2_quad_clean.evt
Size (bytes)485,565,12081,930,240
Size463.1 MB 78.1 MB
Events in quadrant A3,139,997524,246
Events in quadrant B3,681,384528,588
Events in quadrant C3,224,400507,405
Events in quadrant D4,230,437479,439

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133162
B0149342
C0133462
D0169082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6323500.790764%
B63232003.163056%
C6323841.328483%
D63232053.242132%

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 7558 6324 11 11 0.15% 0.17%
B 7558 6323 32 32 0.42% 0.51%
C 7558 6323 0 0 0.00% 0.00%
D 7558 6324 196 196 2.59% 3.10%

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 5 16 68926 428.58 790 773 159.0
A 9 143 26259 160.27 790 773 159.0
A 0 226 6944 38.81 790 773 159.0
B 7 220 230397 1542.47 791 769 148.9
B 0 197 155953 1042.41 791 769 148.9
B 0 189 141866 947.79 791 769 148.9
C 14 238 120987 678.33 762 766 177.2
C 3 233 111875 626.91 762 766 177.2
C 9 221 18195 98.34 762 766 177.2
D 1 52 636192 3463.95 755 733 183.4
D 5 222 283527 1541.54 755 733 183.4
D 7 238 174347 946.39 755 733 183.4

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