ASTROSAT CZTI

Data Quality Report

Orbit 28588

Creation date: 2024-06-27T19:53:42.347930
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_102T03_9000004106_28588cztM0_level2.evt modeM0/AS1A10_102T03_9000004106_28588cztM0_level2_quad_clean.evt
Size (bytes)569,966,40065,822,400
Size543.6 MB 62.8 MB
Events in quadrant A3,909,771392,346
Events in quadrant B3,865,926397,016
Events in quadrant C3,750,890385,120
Events in quadrant D5,303,887373,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159351
B0156531
C0153671
D0202031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63681071.680276%
B6369971.523002%
C63691292.025436%
D63692523.956665%

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 7678 6368 21 21 0.27% 0.33%
B 7679 6369 8 8 0.10% 0.13%
C 7679 6369 3 3 0.04% 0.05%
D 7679 6369 191 191 2.49% 3.00%

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 12 16 192759 1048.69 923 909 182.9
A 15 174 105473 571.57 923 909 182.9
A 12 194 38754 206.87 923 909 182.9
B 10 245 151071 890.31 906 884 168.7
B 4 171 47001 273.38 906 884 168.7
B 15 33 43622 253.35 906 884 168.7
C 14 238 146076 710.56 892 902 204.3
C 7 247 64709 312.3 892 902 204.3
C 0 207 27323 129.32 892 902 204.3
D 1 52 1087934 5184.65 896 878 209.7
D 8 195 645896 3076.38 896 878 209.7
D 2 250 82692 390.21 896 878 209.7

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