ASTROSAT CZTI

Data Quality Report

Orbit 33815

Creation date: 2024-06-27T20:52:52.471073
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_077T01_9000004824_33815cztM0_level2.evt modeM0/AS1T04_077T01_9000004824_33815cztM0_level2_quad_clean.evt
Size (bytes)306,708,48039,600,000
Size292.5 MB 37.8 MB
Events in quadrant A1,452,618258,554
Events in quadrant B2,152,153245,869
Events in quadrant C1,735,211257,005
Events in quadrant D3,755,946235,460

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060751
B082831
C070231
D0131491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282840.141443%
B28281685.940594%
C2828381.343706%
D282835912.694484%

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 2828 2828 1 1 0.04% 0.04%
B 2828 2828 131 131 4.63% 4.63%
C 2828 2828 30 30 1.06% 1.06%
D 2828 2828 349 349 12.34% 12.34%

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 13 6 8469 108.46 370 364 74.7
A 15 169 8003 102.22 370 364 74.7
A 10 83 5641 70.61 370 364 74.7
B 5 172 520936 7620.01 360 353 68.3
B 4 251 76290 1111.52 360 353 68.3
B 0 229 52642 765.38 360 353 68.3
C 0 10 104370 1246.25 365 369 83.5
C 15 214 89980 1073.81 365 369 83.5
C 3 233 37769 448.17 365 369 83.5
D 8 195 985264 10756.7 351 345 91.6
D 12 235 949448 10365.54 351 345 91.6
D 2 250 238827 2604.56 351 345 91.6

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