ASTROSAT CZTI

Data Quality Report

Orbit 50145

Creation date: 2025-01-05T10:12:47.886114
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/AS1C09_003T01_9000006442_50145cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50145cztM0_level2_quad_clean.evt
Size (bytes)890,671,68059,791,680
Size849.4 MB 57.0 MB
Events in quadrant A5,603,807490,822
Events in quadrant B3,216,562615,339
Events in quadrant C12,289,38351,687
Events in quadrant D11,407,168243,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204473
B0136992
C0405292
D0379172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584597716.715141%
B58451041.779299%
C5846539392.251112%
D5846333557.047554%

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 7010 5847 788 788 11.24% 13.48%
B 7010 5847 54 54 0.77% 0.92%
C 7010 5845 3734 3734 53.27% 63.88%
D 7011 5847 3083 3083 43.97% 52.73%

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 98 1513031 10637.87 571 557 142.2
A 12 250 466251 3275.42 571 557 142.2
A 8 38 353369 2481.48 571 557 142.2
B 10 16 96020 748.09 608 590 127.6
B 4 206 86573 674.04 608 590 127.6
B 1 255 61910 480.7 608 590 127.6
C 4 111 7374709 131144.5 191 189 56.2
C 1 60 897717 15961.16 191 189 56.2
C 15 213 894972 15912.34 191 189 56.2
D 15 168 2966455 23953.27 421 405 123.8
D 15 106 1696993 13701.33 421 405 123.8
D 12 6 754184 6087.38 421 405 123.8

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