ASTROSAT CZTI

Data Quality Report

Orbit 01324

Creation date: 2024-06-27T14:10:59.867288
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/AS1G04_002T02_9000000230_01324cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01324cztM0_level2_quad_clean.evt
Size (bytes)1,100,165,76096,672,960
Size1.0 GB 92.2 MB
Events in quadrant A8,087,921635,986
Events in quadrant B8,578,188628,879
Events in quadrant C8,250,636607,131
Events in quadrant D7,967,866598,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286522
B0301281
C0291591
D0283121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6553240.366244%
B6553410.625668%
C6553370.564627%
D65531231.877003%

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 7063 6553 268 268 3.79% 4.09%
B 7063 6554 381 381 5.39% 5.81%
C 7063 6553 267 267 3.78% 4.07%
D 7063 6553 410 410 5.80% 6.26%

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 4 32 243990 494.42 2020 2035 489.4
A 15 127 29543 56.21 2020 2035 489.4
A 8 14 24424 45.75 2020 2035 489.4
B 8 4 356947 714.73 2080 2090 496.5
B 6 53 95633 188.41 2080 2090 496.5
B 12 52 66322 129.37 2080 2090 496.5
C 8 208 395625 738.85 1900 1965 532.8
C 15 241 325648 607.51 1900 1965 532.8
C 3 9 50617 91.31 1900 1965 532.8
D 2 33 274321 473.84 1847 1919 574.9
D 1 83 194221 334.5 1847 1919 574.9
D 13 169 193678 333.56 1847 1919 574.9

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