ASTROSAT CZTI

Data Quality Report

Orbit 40560

Creation date: 2024-06-27T22:17:35.205380
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/AS1A12_054T02_9000005550_40560cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40560cztM0_level2_quad_clean.evt
Size (bytes)928,016,640228,847,680
Size885.0 MB 218.2 MB
Events in quadrant A7,682,4091,607,489
Events in quadrant B8,908,7451,602,777
Events in quadrant C7,087,7781,561,543
Events in quadrant D9,543,9461,152,933

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313895
B0360624
C0303584
D0384264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14546210.144370%
B145463412.344287%
C145461471.010587%
D14546305721.016087%

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 19894 14549 7 7 0.04% 0.05%
B 19894 14549 290 290 1.46% 1.99%
C 19893 14548 89 89 0.45% 0.61%
D 19894 14548 312 312 1.57% 2.14%

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 10 83 1196208 3687.96 1596 1565 323.9
A 6 10 184508 564.76 1596 1565 323.9
A 12 189 99330 301.81 1596 1565 323.9
B 3 112 1945088 6528.3 1570 1528 297.7
B 7 202 467395 1564.82 1570 1528 297.7
B 5 255 79446 261.72 1570 1528 297.7
C 15 214 626927 1744.08 1539 1544 358.6
C 14 254 349986 971.74 1539 1544 358.6
C 0 10 54669 148.16 1539 1544 358.6
D 12 227 1314339 3845.01 1395 1358 341.5
D 2 250 1003292 2934.12 1395 1358 341.5
D 12 191 662907 1937.32 1395 1358 341.5

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