ASTROSAT CZTI

Data Quality Report

Orbit 20221230_A12_083T01_9000005448_level2

Creation date: 2023-01-02T12:10:48.088382
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/AS1A12_083T01_9000005448cztM0_level2.fits modeM0/AS1A12_083T01_9000005448cztM0_level2_quad_clean.evt
Size (bytes)158,918,400168,877,440
Size151.6 MB 161.1 MB
Events in quadrant A982,3301,065,333
Events in quadrant B951,9861,098,155
Events in quadrant C975,8901,053,961
Events in quadrant D596,680595,233

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0532530
B0413430
C0399180
D01209210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188708754.636990%
B188753271.732450%
C18875650.344371%
D188751078757.149669%

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 24247 18873 0 0 0.00% 0.00%
B 24247 18874 0 0 0.00% 0.00%
C 24247 18875 0 0 0.00% 0.00%
D 24247 18834 0 0 0.00% 0.00%

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 7 110 832 8.7 256 239 68.2
A 0 29 827 8.63 256 239 68.2
A 9 19 773 7.84 256 239 68.2
B 2 9 890 12.67 251 238 51.5
B 3 80 723 9.42 251 238 51.5
B 2 8 696 8.9 251 238 51.5
C 1 80 806 8.26 258 241 68.4
C 1 81 788 8.0 258 241 68.4
C 3 203 763 7.63 258 241 68.4
D 4 160 480 6.9 170 155 47.1
D 6 62 458 6.44 170 155 47.1
D 7 3 448 6.22 170 155 47.1

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