ASTROSAT CZTI

Data Quality Report

Orbit 55080

Creation date: 2025-12-03T06:49:16.795816
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/AS1A14_025T01_9000006530_55080cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55080cztM0_level2_quad_clean.evt
Size (bytes)399,985,92096,140,160
Size381.5 MB 91.7 MB
Events in quadrant A4,133,187597,226
Events in quadrant B3,105,761684,188
Events in quadrant C3,174,365608,053
Events in quadrant D3,879,148561,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01710551
B01404358
C01436151
D01645890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65994436.713138%
B6597681.030772%
C6601330.499924%
D65951352.047005%

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 7669 6621 393 393 5.12% 5.94%
B 7668 6622 15 15 0.20% 0.23%
C 7669 6624 22 22 0.29% 0.33%
D 7669 6623 109 109 1.42% 1.65%

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 15 32 1385171 8087.51 691 674 171.2
A 13 254 17880 100.51 691 674 171.2
A 15 16 17301 97.13 691 674 171.2
B 5 185 112526 730.81 710 681 153.0
B 0 182 50729 327.02 710 681 153.0
B 2 249 46731 300.89 710 681 153.0
C 9 38 286155 1473.97 700 691 193.7
C 13 3 85881 439.87 700 691 193.7
C 12 252 23796 119.3 700 691 193.7
D 11 129 488300 2497.76 685 653 195.2
D 2 252 108008 549.88 685 653 195.2
D 9 1 105259 535.8 685 653 195.2

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