ASTROSAT CZTI

Data Quality Report

Orbit 20160509_G05_246T01_9000000450_level2

Creation date: 2025-10-29T08:06:10.265828
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/AS1G05_246T01_9000000450cztM0_level2.fits modeM0/AS1G05_246T01_9000000450cztM0_level2_quad_clean.evt
Size (bytes)1,330,632,0001,415,681,280
Size1.2 GB 1.3 GB
Events in quadrant A7,938,5468,480,165
Events in quadrant B7,680,1848,605,515
Events in quadrant C7,765,6188,109,996
Events in quadrant D6,758,9347,530,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03062150
B03477580
C03551900
D03283100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030090
B030200
C030160
D030080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02090
C02090
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14818723411.579761%
B14811931372.117892%
C14814538562.602855%
D14815630232.040417%

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 173521 148420 0 0 0.00% 0.00%
B 173521 148358 0 0 0.00% 0.00%
C 173521 148371 0 0 0.00% 0.00%
D 173521 148362 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 14 188 7677 10.7 2057 1902 539.8
A 0 29 7602 10.56 2057 1902 539.8
A 14 204 6722 8.93 2057 1902 539.8
B 2 9 6791 11.79 2023 1910 414.1
B 12 226 5585 8.87 2023 1910 414.1
B 14 254 5292 8.17 2023 1910 414.1
C 1 80 5508 6.71 2050 1888 539.1
C 1 81 5462 6.63 2050 1888 539.1
C 12 241 5367 6.45 2050 1888 539.1
D 7 5 4904 6.01 1934 1744 525.8
D 6 231 4858 5.92 1934 1744 525.8
D 7 3 4729 5.68 1934 1744 525.8

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