ASTROSAT CZTI

Data Quality Report

Orbit 46889

Creation date: 2024-06-27T23:29:15.280142
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_9000006276_46889cztM0_level2.fits modeM0/AS1T05_206T01_9000006276_46889cztM0_level2_quad_clean.evt
Size (bytes)1,485,227,520237,902,400
Size1.4 GB 226.9 MB
Events in quadrant A14,819,3821,656,429
Events in quadrant B20,623,7741,293,126
Events in quadrant C7,513,5031,672,914
Events in quadrant D10,754,7811,448,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537432
B0727222
C0346112
D0438422

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 16407 70 70 0.41% 0.43%
B 16912 16408 3149 3149 18.62% 19.19%
C 16912 16409 52 52 0.31% 0.32%
D 16911 16407 824 824 4.87% 5.02%

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 7504780 19640.44 1822 1778 382.0
A 13 248 233178 605.73 1822 1778 382.0
A 13 254 24326 59.02 1822 1778 382.0
B 3 112 13764730 41633.32 1660 1607 330.6
B 4 171 83638 248.14 1660 1607 330.6
B 12 48 53445 156.81 1660 1607 330.6
C 14 254 392137 910.57 1804 1809 428.7
C 12 16 39831 88.7 1804 1809 428.7
C 10 20 27635 60.25 1804 1809 428.7
D 13 249 3009900 6766.77 1744 1689 444.6
D 2 249 463092 1037.9 1744 1689 444.6
D 1 52 253101 565.53 1744 1689 444.6

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