ASTROSAT CZTI

Data Quality Report

Orbit 04466

Creation date: 2024-06-27T14:42:24.301643
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/AS1G05_253T01_9000000560_04466cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04466cztM0_level2_quad_clean.evt
Size (bytes)11,646,7202,753,280
Size11.1 MB 2.6 MB
Events in quadrant A90,82818,200
Events in quadrant B78,30012,233
Events in quadrant C82,51715,695
Events in quadrant D86,18916,895

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357357
B0351345
C0353350
D0357353

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01615
B01816
C01715
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03746037058
B03841938094
C03605735688
D03898438591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19810.505051%
B15810.632911%
C18521.081081%
D19510.512821%

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 18595 374 0 0 0.00% 0.00%
B 16886 301 0 0 0.00% 0.00%
C 17183 355 0 0 0.00% 0.00%
D 17122 372 0 0 0.00% 0.00%

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 0 13 1631 240.67 22 21 6.7
A 0 118 885 129.15 22 21 6.7
A 13 248 760 110.47 22 21 6.7
B 15 204 2998 549.72 17 17 5.4
B 14 167 2344 429.12 17 17 5.4
B 10 16 2013 368.08 17 17 5.4
C 9 16 3076 474.98 19 19 6.4
C 14 48 788 119.48 19 19 6.4
C 8 128 453 67.43 19 19 6.4
D 13 235 1476 203.35 21 20 7.2
D 9 35 1300 178.77 21 20 7.2
D 2 136 633 85.61 21 20 7.2

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