ASTROSAT CZTI

Data Quality Report

Orbit 16198

Creation date: 2024-06-27T17:19:14.779401
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/AS1T02_109T01_9000002386_16198cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16198cztM0_level2_quad_clean.evt
Size (bytes)541,008,00067,579,200
Size515.9 MB 64.4 MB
Events in quadrant A3,511,111401,707
Events in quadrant B3,957,380404,355
Events in quadrant C3,513,413390,182
Events in quadrant D4,950,723385,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143493
B0156792
C0142462
D0191532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66571512.268289%
B66572403.605228%
C66571662.493616%
D66575768.652546%

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 7788 6659 0 0 0.00% 0.00%
B 7788 6659 63 63 0.81% 0.95%
C 7788 6659 4 4 0.05% 0.06%
D 7788 6659 278 278 3.57% 4.17%

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 8 247 41652 224.39 896 878 181.7
A 15 157 16462 85.76 896 878 181.7
A 0 226 7985 39.11 896 878 181.7
B 5 65 356816 2125.06 882 864 167.5
B 4 216 84477 499.17 882 864 167.5
B 0 189 22881 131.44 882 864 167.5
C 14 238 132903 675.59 850 857 195.5
C 0 207 33451 166.76 850 857 195.5
C 3 233 23608 116.4 850 857 195.5
D 2 233 1552364 7455.97 854 828 208.1
D 1 52 128000 611.13 854 828 208.1
D 2 234 26832 124.96 854 828 208.1

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