ASTROSAT CZTI

Data Quality Report

Orbit 52470

Creation date: 2025-06-26T14:08:55.664610
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/AS1A13_037T01_9000006476_52470cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52470cztM0_level2_quad_clean.evt
Size (bytes)841,101,12059,869,440
Size802.1 MB 57.1 MB
Events in quadrant A3,349,470545,111
Events in quadrant B5,211,440525,337
Events in quadrant C7,830,731337,230
Events in quadrant D14,297,1742,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014204208
B019684240
C0292851952
D0485792151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01203
B01201
C01211
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58271532.625708%
B582184914.585123%
C5678204836.069038%
D5672564799.559238%

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 6864 5891 75 75 1.09% 1.27%
B 6864 5898 628 628 9.15% 10.65%
C 6864 5760 1693 1693 24.66% 29.39%
D 6864 5776 5206 5206 75.84% 90.13%

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 8 249 624145 4009.58 630 613 155.5
A 8 25 82005 523.39 630 613 155.5
A 11 3 72515 462.36 630 613 155.5
B 10 44 1285030 9980.13 594 573 128.7
B 10 254 741629 5757.95 594 573 128.7
B 4 81 236702 1834.7 594 573 128.7
C 15 224 5388341 42770.24 459 456 126.0
C 4 5 159361 1261.42 459 456 126.0
C 15 199 143150 1132.74 459 456 126.0
D 15 93 13136105 352184.88 127 121 37.3
D 6 42 309863 8304.4 127 121 37.3
D 8 176 99250 2657.72 127 121 37.3

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