ASTROSAT CZTI

Data Quality Report

Orbit 35224

Creation date: 2022-04-04T03:24:35.796492
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_35224cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35224cztM0_level2_quad_clean.evt
Size (bytes)814,164,48071,118,720
Size776.4 MB 67.8 MB
Events in quadrant A2,800,128482,025
Events in quadrant B8,545,678366,670
Events in quadrant C3,061,849482,009
Events in quadrant D9,848,904405,685

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122303
B0294562
C0127352
D0333762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594560.100925%
B5945220237.039529%
C5945430.723297%
D5945153725.853659%

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 7227 5946 1 1 0.01% 0.02%
B 7227 5946 1656 1656 22.91% 27.85%
C 7227 5946 29 29 0.40% 0.49%
D 7227 5946 1722 1722 23.83% 28.96%

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 106076 767.14 685 673 137.4
A 9 143 19599 137.75 685 673 137.4
A 13 6 13115 90.56 685 673 137.4
B 5 236 4878434 43311.34 579 563 112.6
B 5 172 1305173 11583.83 579 563 112.6
B 5 200 21644 187.18 579 563 112.6
C 15 214 248751 1601.22 665 670 154.9
C 0 10 141260 907.43 665 670 154.9
C 1 23 39050 247.72 665 670 154.9
D 8 195 5231815 34695.81 616 598 150.8
D 12 6 719293 4766.71 616 598 150.8
D 7 80 490880 3251.77 616 598 150.8

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