ASTROSAT CZTI

Data Quality Report

Orbit 54685

Creation date: 2025-11-06T18:26:48.694651
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_066T07_9000006522_54685cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54685cztM0_level2_quad_clean.evt
Size (bytes)1,507,982,400204,480,000
Size1.4 GB 195.0 MB
Events in quadrant A8,526,2731,435,996
Events in quadrant B8,472,6501,543,800
Events in quadrant C11,263,2661,318,146
Events in quadrant D26,336,670802,294

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366314
B0366034
C0449854
D0892214

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157996203.924299%
B158006213.930380%
C1580012227.734177%
D15800663842.012658%

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 16984 15800 313 313 1.84% 1.98%
B 16985 15801 193 193 1.14% 1.22%
C 16985 15802 958 958 5.64% 6.06%
D 16985 15801 6334 6334 37.29% 40.09%

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 14 1252297 2971.46 1723 1679 420.9
A 3 14 177142 416.9 1723 1679 420.9
A 11 3 150857 354.45 1723 1679 420.9
B 2 249 1259408 3458.95 1692 1628 363.6
B 10 247 179576 489.36 1692 1628 363.6
B 0 213 111827 303.05 1692 1628 363.6
C 15 157 3347612 7468.3 1635 1619 448.0
C 6 223 541797 1205.68 1635 1619 448.0
C 12 252 231953 514.11 1635 1619 448.0
D 11 129 12099455 30586.77 1382 1318 395.5
D 11 176 3535683 8935.66 1382 1318 395.5
D 2 62 1959710 4951.25 1382 1318 395.5

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