ASTROSAT CZTI

Data Quality Report

Orbit 35206

Creation date: 2022-04-04T19:28:57.822014
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/AS1C07_004T01_9000005052_35206cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35206cztM0_level2_quad_clean.evt
Size (bytes)523,820,16073,811,520
Size499.6 MB 70.4 MB
Events in quadrant A2,414,755501,415
Events in quadrant B5,765,489446,823
Events in quadrant C2,781,300480,754
Events in quadrant D4,570,856462,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102042
B0204571
C0111431
D0170381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4893120.245248%
B4893119124.340895%
C48931473.004292%
D48931653.372164%

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 6984 4894 6 6 0.09% 0.12%
B 6984 4894 818 818 11.71% 16.71%
C 6984 4894 117 117 1.68% 2.39%
D 6984 4894 211 211 3.02% 4.31%

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 10 83 73472 617.03 585 576 118.1
A 10 255 33876 281.87 585 576 118.1
A 9 143 22718 187.42 585 576 118.1
B 5 236 3644563 36698.12 524 513 99.3
B 4 232 29639 293.32 524 513 99.3
B 5 172 16341 159.4 524 513 99.3
C 9 187 215265 1697.13 547 552 126.5
C 15 214 201442 1587.87 547 552 126.5
C 0 10 169583 1336.05 547 552 126.5
D 8 195 1431221 10529.76 557 543 135.9
D 1 47 415911 3057.1 557 543 135.9
D 10 118 167516 1228.92 557 543 135.9

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