ASTROSAT CZTI

Data Quality Report

Orbit 13535

Creation date: 2024-06-27T16:42:15.593868
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_038T01_9000001994_13535cztM0_level2.evt modeM0/AS1T02_038T01_9000001994_13535cztM0_level2_quad_clean.evt
Size (bytes)542,056,32094,608,000
Size516.9 MB 90.2 MB
Events in quadrant A4,300,115607,136
Events in quadrant B3,822,402608,992
Events in quadrant C4,049,382606,347
Events in quadrant D3,785,208570,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170503
B0153082
C0162322
D0152872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67692002.954646%
B67691622.393263%
C67691301.920520%
D67691341.979613%

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 7790 6770 6 6 0.08% 0.09%
B 7790 6770 3 3 0.04% 0.04%
C 7790 6770 6 6 0.08% 0.09%
D 7790 6770 25 25 0.32% 0.37%

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 14 238 641573 3234.7 947 932 198.1
A 1 162 12964 60.75 947 932 198.1
A 0 226 8416 37.79 947 932 198.1
B 3 64 30999 163.08 940 920 184.4
B 0 189 28203 147.92 940 920 184.4
B 0 197 27618 144.75 940 920 184.4
C 3 233 411988 1912.21 920 932 215.0
C 12 4 52080 237.94 920 932 215.0
C 13 61 6580 26.27 920 932 215.0
D 13 104 108811 478.51 919 899 225.5
D 8 195 76592 335.65 919 899 225.5
D 2 14 64563 282.31 919 899 225.5

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