ASTROSAT CZTI

Data Quality Report

Orbit 39542

Creation date: 2024-06-27T22:05:54.551894
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_018T01_9000005488_39542cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39542cztM0_level2_quad_clean.evt
Size (bytes)1,136,165,760242,251,200
Size1.1 GB 231.0 MB
Events in quadrant A8,870,6311,674,620
Events in quadrant B6,986,1091,699,634
Events in quadrant C11,886,8651,553,573
Events in quadrant D13,106,0531,330,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360525
B0324054
C0453774
D0499414

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15602470.301243%
B156022111.352391%
C156028705.576208%
D15602187612.024099%

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 19840 15605 33 33 0.17% 0.21%
B 19840 15605 86 86 0.43% 0.55%
C 19840 15605 840 840 4.23% 5.38%
D 19840 15605 1421 1421 7.16% 9.11%

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 1109828 3261.14 1676 1641 339.8
A 15 222 719918 2113.72 1676 1641 339.8
A 6 10 439046 1287.18 1676 1641 339.8
B 5 255 461477 1454.84 1648 1599 316.1
B 12 111 40345 122.57 1648 1599 316.1
B 11 111 37288 112.9 1648 1599 316.1
C 9 187 4225488 11354.98 1604 1612 372.0
C 15 208 717584 1924.74 1604 1612 372.0
C 15 214 638240 1711.44 1604 1612 372.0
D 12 0 3081072 8224.27 1531 1487 374.5
D 12 227 1605382 4283.33 1531 1487 374.5
D 13 174 1272596 3394.59 1531 1487 374.5

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