ASTROSAT CZTI

Data Quality Report

Orbit 31705

Creation date: 2024-06-27T20:31:45.301108
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/AS1T04_034T01_9000004632_31705cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31705cztM0_level2_quad_clean.evt
Size (bytes)788,106,240114,145,920
Size751.6 MB 108.9 MB
Events in quadrant A5,136,392725,069
Events in quadrant B6,704,242735,783
Events in quadrant C5,829,536714,074
Events in quadrant D5,634,149701,430

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206812
B0262322
C0230242
D0224912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83544205.027532%
B83544465.338760%
C83554034.823459%
D83551752.094554%

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 8774 8357 182 182 2.07% 2.18%
B 8774 8357 2 2 0.02% 0.02%
C 8775 8358 9 9 0.10% 0.11%
D 8775 8358 28 28 0.32% 0.34%

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 1030370 4765.46 1058 1035 216.0
A 8 255 20171 88.59 1058 1035 216.0
A 13 254 14939 64.37 1058 1035 216.0
B 6 159 2269747 10918.76 1059 1031 207.8
B 4 80 159118 760.83 1059 1031 207.8
B 0 229 38522 180.43 1059 1031 207.8
C 3 233 1361652 5558.47 1026 1033 244.8
C 14 238 159057 645.57 1026 1033 244.8
C 0 10 156987 637.11 1026 1033 244.8
D 8 195 1159309 4615.83 1036 1007 250.9
D 12 227 416468 1655.61 1036 1007 250.9
D 12 233 84900 334.31 1036 1007 250.9

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