ASTROSAT CZTI

Data Quality Report

Orbit 35639

Creation date: 2022-05-02T13:59:26.680997
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_106T01_9000005102_35639cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35639cztM0_level2_quad_clean.evt
Size (bytes)755,352,00074,689,920
Size720.4 MB 71.2 MB
Events in quadrant A12,435,486334,760
Events in quadrant B3,533,242525,677
Events in quadrant C3,578,859516,813
Events in quadrant D2,963,243505,345

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0405423
B0138432
C0139852
D0121772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5392496592.080861%
B53921953.616469%
C53922083.857567%
D5392611.131306%

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 9577 5393 4776 4776 49.87% 88.56%
B 9577 5394 121 121 1.26% 2.24%
C 9577 5394 165 165 1.72% 3.06%
D 9577 5394 57 57 0.60% 1.06%

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 10532089 113865.85 459 450 92.5
A 10 83 97637 1050.77 459 450 92.5
A 12 189 20201 213.54 459 450 92.5
B 5 172 874490 7013.91 660 643 124.6
B 0 197 35587 280.48 660 643 124.6
B 0 189 20785 161.67 660 643 124.6
C 0 10 739120 4908.75 655 661 150.4
C 15 214 222197 1472.61 655 661 150.4
C 7 220 55599 365.19 655 661 150.4
D 12 217 151408 947.92 658 643 159.0
D 13 249 125663 786.05 658 643 159.0
D 2 153 76292 475.64 658 643 159.0

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