ASTROSAT CZTI

Data Quality Report

Orbit 20220108_A11_034T02_9000004856_level2

Creation date: 2022-01-10T17:32:01.279458
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/AS1A11_034T02_9000004856cztM0_level2_bc.evt modeM0/AS1A11_034T02_9000004856cztM0_level2_quad_clean.evt
Size (bytes)591,102,720128,600,640
Size563.7 MB 122.6 MB
Events in quadrant A3,143,559785,966
Events in quadrant B3,519,245786,058
Events in quadrant C3,510,464769,999
Events in quadrant D6,900,721717,460

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268470
B0284140
C0270920
D0409900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12073930.770314%
B120732762.286093%
C120731150.952539%
D120738236.816864%

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 16162 12075 0 0 0.00% 0.00%
B 16162 12073 11 11 0.07% 0.09%
C 16162 12073 7 7 0.04% 0.06%
D 16162 12074 60 60 0.37% 0.50%

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 15 169 694415 5050.95 611 602 137.4
A 13 6 35022 250.58 611 602 137.4
A 14 238 23769 168.66 611 602 137.4
B 5 172 713369 5766.62 611 598 123.6
B 4 251 174897 1410.15 611 598 123.6
B 0 190 86930 698.46 611 598 123.6
C 15 214 497675 3623.21 597 593 137.2
C 0 10 326682 2376.85 597 593 137.2
C 3 233 233648 1698.73 597 593 137.2
D 8 195 1713118 11778.37 586 565 145.4
D 2 250 681203 4681.2 586 565 145.4
D 7 238 545982 3751.19 586 565 145.4

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