ASTROSAT CZTI

Data Quality Report

Orbit 20518

Creation date: 2024-06-27T18:16:20.019940
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/AS1A05_115T03_9000003032_20518cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20518cztM0_level2_quad_clean.evt
Size (bytes)1,037,514,240166,230,720
Size989.5 MB 158.5 MB
Events in quadrant A6,457,6021,065,393
Events in quadrant B7,098,6621,070,985
Events in quadrant C6,256,6081,022,633
Events in quadrant D10,712,037959,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278322
B0292213
C0271542
D0405172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132573042.293128%
B132573442.594856%
C132572902.187524%
D13257133010.032436%

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 14697 13257 28 28 0.19% 0.21%
B 14697 13257 50 50 0.34% 0.38%
C 14697 13257 2 2 0.01% 0.02%
D 14697 13257 1007 1007 6.85% 7.60%

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 5 16 226326 695.79 1595 1555 323.0
A 12 96 70563 213.62 1595 1555 323.0
A 11 29 15331 42.64 1595 1555 323.0
B 0 189 296946 977.91 1591 1552 302.1
B 0 197 142948 468.09 1591 1552 302.1
B 10 246 126845 414.78 1591 1552 302.1
C 14 238 235712 654.85 1529 1536 357.6
C 0 207 16226 41.08 1529 1536 357.6
C 8 128 11344 27.43 1529 1536 357.6
D 5 222 3565327 9737.56 1496 1452 366.0
D 13 153 575548 1568.6 1496 1452 366.0
D 7 238 223610 607.0 1496 1452 366.0

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