ASTROSAT CZTI

Data Quality Report

Orbit 20240530_T05_206T01_9000006276_level2

Creation date: 2024-05-31T11:30:06.247775
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/AS1T05_206T01_9000006276cztM0_level2.fits modeM0/AS1T05_206T01_9000006276cztM0_level2_quad_clean.evt
Size (bytes)138,493,440134,619,840
Size132.1 MB 128.4 MB
Events in quadrant A819,194837,753
Events in quadrant B710,212558,077
Events in quadrant C833,250823,468
Events in quadrant D697,224725,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537410
B0727200
C0346090
D0438400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164075753.504602%
B16407441826.927531%
C164072461.499360%
D1640711396.942159%

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 16912 16405 0 0 0.00% 0.00%
B 16912 16401 0 0 0.00% 0.00%
C 16912 16408 0 0 0.00% 0.00%
D 16911 16378 0 0 0.00% 0.00%

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 7 110 661 7.99 213 198 57.9
A 14 95 623 7.33 213 198 57.9
A 15 174 592 6.8 213 198 57.9
B 2 9 695 13.21 186 177 39.2
B 2 8 549 9.49 186 177 39.2
B 3 17 497 8.16 186 177 39.2
C 3 202 637 7.23 220 204 59.9
C 3 203 616 6.88 220 204 59.9
C 1 81 603 6.66 220 204 59.9
D 15 47 514 5.83 199 181 57.1
D 4 16 500 5.58 199 181 57.1
D 15 63 497 5.53 199 181 57.1

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