ASTROSAT CZTI

Data Quality Report

Orbit 01087

Creation date: 2024-06-27T14:07:17.177841
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/AS1P01_997T02_9000000212_01087cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01087cztM0_level2_quad_clean.evt
Size (bytes)1,035,495,360100,992,960
Size987.5 MB 96.3 MB
Events in quadrant A7,653,914672,175
Events in quadrant B7,900,797660,944
Events in quadrant C7,689,480640,515
Events in quadrant D7,689,519636,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272472
B0280521
C0273861
D0274391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6437560.869970%
B6437350.543732%
C6437330.512661%
D6437901.398167%

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 7392 6437 253 253 3.42% 3.93%
B 7392 6437 274 274 3.71% 4.26%
C 7392 6437 210 210 2.84% 3.26%
D 7392 6437 314 314 4.25% 4.88%

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 4 32 46158 92.57 1983 1996 477.0
A 11 79 8889 14.45 1983 1996 477.0
A 3 111 5978 8.35 1983 1996 477.0
B 15 22 53116 106.73 2028 2035 478.6
B 15 85 43192 86.0 2028 2035 478.6
B 5 191 21705 41.1 2028 2035 478.6
C 15 241 304266 584.95 1859 1923 516.9
C 9 202 41655 76.87 1859 1923 516.9
C 3 79 37616 69.06 1859 1923 516.9
D 12 22 375541 657.54 1843 1915 568.2
D 2 216 270563 472.79 1843 1915 568.2
D 13 73 56304 95.72 1843 1915 568.2

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