ASTROSAT CZTI

Data Quality Report

Orbit 31686

Creation date: 2024-06-27T20:31:32.869258
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_103T09_9000004630_31686cztM0_level2.evt modeM0/AS1A10_103T09_9000004630_31686cztM0_level2_quad_clean.evt
Size (bytes)572,817,60093,695,040
Size546.3 MB 89.4 MB
Events in quadrant A3,162,789632,475
Events in quadrant B5,825,786615,462
Events in quadrant C4,288,768583,524
Events in quadrant D3,661,258583,220

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131101
B0214982
C0166541
D0150841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6048661.091270%
B60483826.316138%
C60483195.274471%
D6048731.207011%

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 7403 6049 0 0 0.00% 0.00%
B 7403 6049 186 186 2.51% 3.07%
C 7403 6049 136 136 1.84% 2.25%
D 7403 6049 15 15 0.20% 0.25%

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 19171 113.72 813 800 161.5
A 13 254 12093 69.9 813 800 161.5
A 3 137 7684 42.61 813 800 161.5
B 6 159 1781939 11918.6 793 776 149.4
B 10 245 542519 3625.06 793 776 149.4
B 4 80 174479 1162.33 793 776 149.4
C 3 233 802074 4598.37 750 756 174.3
C 0 10 267783 1532.34 750 756 174.3
C 14 238 124659 711.02 750 756 174.3
D 8 195 589024 3262.72 769 754 180.3
D 13 249 94944 522.4 769 754 180.3
D 2 234 28367 153.15 769 754 180.3

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