ASTROSAT CZTI

Data Quality Report

Orbit 20230520_A12_037T01_9000005652_level2

Creation date: 2023-05-23T11:32:20.163391
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/AS1A12_037T01_9000005652cztM0_level2.fits modeM0/AS1A12_037T01_9000005652cztM0_level2_quad_clean.evt
Size (bytes)416,119,680402,402,240
Size396.8 MB 383.8 MB
Events in quadrant A2,514,2822,381,070
Events in quadrant B2,413,7182,386,998
Events in quadrant C2,395,8422,219,761
Events in quadrant D2,092,9062,013,650

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09500
B09500
C09500
D09500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0994490
B0992990
C01031850
D01184050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46394810.174592%
B463942610.562573%
C4639412922.784843%
D4639412122.612407%

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 64829 46394 0 0 0.00% 0.00%
B 64829 46393 0 0 0.00% 0.00%
C 64829 46207 0 0 0.00% 0.00%
D 64829 46351 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 2112 8.99 655 611 167.0
A 0 29 2030 8.5 655 611 167.0
A 9 19 2017 8.42 655 611 167.0
B 2 9 2097 11.6 637 605 128.6
B 3 80 1773 9.08 637 605 128.6
B 5 128 1647 8.1 637 605 128.6
C 1 81 1930 8.15 632 589 164.5
C 1 80 1909 8.02 632 589 164.5
C 3 203 1852 7.68 632 589 164.5
D 4 160 1566 6.37 598 546 160.2
D 7 3 1556 6.31 598 546 160.2
D 10 189 1554 6.29 598 546 160.2

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