ASTROSAT CZTI

Data Quality Report

Orbit 20200914_T03_224T01_9000003868_level2

Creation date: 2021-01-08T08:09:25.995155
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_224T01_9000003868cztM0_level2_bc.evt modeM0/AS1T03_224T01_9000003868cztM0_level2_quad_clean.evt
Size (bytes)4,501,494,7201,120,766,400
Size4.2 GB 1.0 GB
Events in quadrant A30,523,7457,189,108
Events in quadrant B42,302,1906,982,926
Events in quadrant C18,380,7727,183,672
Events in quadrant D39,152,7506,568,234

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02228410
B02652170
C01838700
D02614120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017840
B017840
C017840
D017840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8780019262.193622%
B87800984611.214123%
C8780013461.533030%
D8780065987.514806%

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 102094 87799 148 148 0.14% 0.17%
B 102094 87798 3855 3855 3.78% 4.39%
C 102095 87801 3 3 0.00% 0.00%
D 102094 87786 1344 1344 1.32% 1.53%

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 13 11881030 11456.65 4805 4725 1036.6
A 13 254 134764 125.44 4805 4725 1036.6
A 12 96 81943 74.49 4805 4725 1036.6
B 0 189 21003884 23580.4 4752 4641 890.5
B 10 246 1192207 1333.54 4752 4641 890.5
B 3 64 827440 923.93 4752 4641 890.5
C 15 208 119653 104.17 4712 4694 1103.6
C 7 87 92793 79.83 4712 4694 1103.6
C 13 61 26701 19.94 4712 4694 1103.6
D 7 80 11059227 10747.39 4550 4439 1028.6
D 1 52 7879849 7656.42 4550 4439 1028.6
D 2 250 1460058 1415.14 4550 4439 1028.6

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