ASTROSAT CZTI

Data Quality Report

Orbit 20170702_G07_049T01_9000001352_level2

Creation date: 2025-11-14T22:43:34.727602
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/AS1G07_049T01_9000001352cztM0_level2.fits modeM0/AS1G07_049T01_9000001352cztM0_level2_quad_clean.evt
Size (bytes)1,090,883,5201,445,532,480
Size1.0 GB 1.3 GB
Events in quadrant A6,767,9709,667,610
Events in quadrant B6,499,7469,516,501
Events in quadrant C6,564,2989,036,249
Events in quadrant D5,295,9807,657,021

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01870
B01890
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02563070
B02503330
C02605180
D02520110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023960
B023810
C023920
D023940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11757515051.280034%
B11765415501.317422%
C11768624442.076713%
D10791421071.952481%

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 139189 119470 0 0 0.00% 0.00%
B 139189 119491 0 0 0.00% 0.00%
C 139189 119551 0 0 0.00% 0.00%
D 128686 109350 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 0 29 6734 11.56 1763 1659 439.0
A 7 110 5578 8.93 1763 1659 439.0
A 0 30 5122 7.89 1763 1659 439.0
B 2 9 5479 11.71 1718 1649 327.0
B 14 254 4383 8.36 1718 1649 327.0
B 12 226 4325 8.18 1718 1649 327.0
C 12 241 4603 6.68 1734 1619 446.9
C 9 188 4383 6.18 1734 1619 446.9
C 2 191 4361 6.14 1734 1619 446.9
D 3 14 3881 6.17 1511 1379 405.2
D 6 231 3837 6.06 1511 1379 405.2
D 10 189 3734 5.81 1511 1379 405.2

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