ASTROSAT CZTI

Data Quality Report

Orbit 55988

Creation date: 2026-02-06T11:07:27.517786
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_066T02_9000006546_55988cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55988cztM0_level2_quad_clean.evt
Size (bytes)428,702,40085,659,840
Size408.8 MB 81.7 MB
Events in quadrant A4,450,882522,234
Events in quadrant B3,420,007571,694
Events in quadrant C3,516,431514,509
Events in quadrant D3,913,037475,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184260
B0155400
C0161330
D0170240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73132663.637358%
B7314410.560569%
C7314911.244189%
D7314821.121138%

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 7624 7624 217 217 2.85% 2.85%
B 7625 7625 9 9 0.12% 0.12%
C 7625 7625 79 79 1.04% 1.04%
D 7625 7625 83 83 1.09% 1.09%

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 7 64 766048 3998.45 769 751 191.4
A 12 115 554831 2894.9 769 751 191.4
A 4 3 55529 286.2 769 751 191.4
B 0 199 127236 756.35 779 752 167.2
B 2 249 57560 339.7 779 752 167.2
B 0 173 27937 162.56 779 752 167.2
C 15 230 340229 1646.85 760 755 206.1
C 14 254 39434 187.64 760 755 206.1
C 9 38 28165 132.97 760 755 206.1
D 2 249 482527 2237.48 756 722 215.3
D 7 129 245463 1136.56 756 722 215.3
D 11 129 106835 492.78 756 722 215.3

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