ASTROSAT CZTI

Data Quality Report

Orbit 15554

Creation date: 2024-06-27T17:10:15.220162
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/AS1G08_030T01_9000002302_15554cztM0_level2.evt modeM0/AS1G08_030T01_9000002302_15554cztM0_level2_quad_clean.evt
Size (bytes)452,079,36097,922,880
Size431.1 MB 93.4 MB
Events in quadrant A3,198,218632,968
Events in quadrant B3,514,195635,575
Events in quadrant C3,293,903608,657
Events in quadrant D3,208,740600,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142553
B0150302
C0143802
D0145092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7005300.428266%
B7005861.227695%
C7005600.856531%
D7005470.670949%

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 8631 7008 0 0 0.00% 0.00%
B 8631 7008 28 28 0.32% 0.40%
C 8631 7007 1 1 0.01% 0.01%
D 8631 7008 23 23 0.27% 0.33%

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 0 226 7163 37.63 831 814 168.7
A 12 194 6148 31.62 831 814 168.7
A 3 137 5674 28.81 831 814 168.7
B 3 64 212402 1326.34 830 810 159.5
B 0 214 31799 194.25 830 810 159.5
B 12 111 18980 113.9 830 810 159.5
C 14 238 124144 657.29 801 806 187.6
C 3 233 30351 157.45 801 806 187.6
C 10 22 9063 44.0 801 806 187.6
D 15 0 72118 324.83 800 783 219.6
D 2 234 28303 125.31 800 783 219.6
D 5 51 19735 86.3 800 783 219.6

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