ASTROSAT CZTI

Data Quality Report

Orbit 37645

Creation date: 2024-06-27T21:42:34.712507
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_075T01_9000005342_37645cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37645cztM0_level2_quad_clean.evt
Size (bytes)1,311,073,920175,780,800
Size1.2 GB 167.6 MB
Events in quadrant A13,578,2701,043,377
Events in quadrant B8,181,0911,088,206
Events in quadrant C7,770,1481,088,823
Events in quadrant D9,124,9071,027,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0507915
B0341764
C0321674
D0376944

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1559513468.630971%
B155952641.692850%
C15595370.237256%
D155953662.346906%

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 19834 15598 1051 1051 5.30% 6.74%
B 19833 15594 190 190 0.96% 1.22%
C 19833 15594 27 27 0.14% 0.17%
D 19833 15595 332 332 1.67% 2.13%

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 15 222 5807209 16725.75 1733 1695 347.1
A 10 83 781060 2245.36 1733 1695 347.1
A 9 143 137486 391.22 1733 1695 347.1
B 5 172 552773 1612.6 1778 1727 341.7
B 5 255 183211 531.1 1778 1727 341.7
B 0 230 85160 244.16 1778 1727 341.7
C 15 214 718044 1777.7 1751 1761 402.9
C 14 254 110691 270.35 1751 1761 402.9
C 0 10 90010 219.02 1751 1761 402.9
D 13 249 727635 1731.64 1735 1686 419.2
D 2 249 410810 975.9 1735 1686 419.2
D 2 153 255360 605.1 1735 1686 419.2

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