ASTROSAT CZTI

Data Quality Report

Orbit 00298

Creation date: 2024-06-27T13:58:54.433740
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_126T04_9000000036_00298cztM0_level2.evt modeM0/AS1P01_126T04_9000000036_00298cztM0_level2_quad_clean.evt
Size (bytes)955,440,00013,596,480
Size911.2 MB 13.0 MB
Events in quadrant A6,917,6603,898
Events in quadrant B7,103,8143,917
Events in quadrant C8,246,3173,641
Events in quadrant D6,293,1583,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245833
B0251272
C0285022
D0227232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A565630.053041%
B565640.070721%
C56561502.652051%
D565640.070721%

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 5657 131 131 1.77% 2.32%
B 7392 5657 149 149 2.02% 2.63%
C 7392 5657 612 612 8.28% 10.82%
D 7392 5657 71 71 0.96% 1.26%

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 5 243 42973 105.09 1766 1748 392.3
A 0 6 25591 60.78 1766 1748 392.3
A 13 17 8536 17.3 1766 1748 392.3
B 0 183 82934 189.89 1800 1805 427.2
B 8 6 82807 189.59 1800 1805 427.2
B 5 46 44211 99.25 1800 1805 427.2
C 2 192 860462 1885.8 1611 1662 455.4
C 1 1 837276 1834.89 1611 1662 455.4
C 3 159 82349 177.18 1611 1662 455.4
D 13 216 202427 410.3 1553 1619 489.4
D 1 5 72391 144.6 1553 1619 489.4
D 12 237 23241 44.18 1553 1619 489.4

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