ASTROSAT CZTI

Data Quality Report

Orbit 20240521_A13_053T01_9000006266_level2

Creation date: 2024-05-24T12:32:43.607677
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/AS1A13_053T01_9000006266cztM0_level2.fits modeM0/AS1A13_053T01_9000006266cztM0_level2_quad_clean.evt
Size (bytes)1,592,838,7201,779,344,640
Size1.5 GB 1.7 GB
Events in quadrant A9,222,46810,668,390
Events in quadrant B9,168,23611,056,844
Events in quadrant C9,438,22410,526,238
Events in quadrant D7,974,2149,213,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036820
B036820
C036820
D036820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02550
B02550
C02550
D02550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06403360
B04176000
C03827820
D04915500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18140491765.058323%
B18140533901.868747%
C18141019351.066645%
D181403104795.776641%

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 206756 181367 0 0 0.00% 0.00%
B 206756 181379 0 0 0.00% 0.00%
C 206756 181376 0 0 0.00% 0.00%
D 206756 181243 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 7 110 7366 8.37 2404 2252 611.3
A 0 29 7024 7.81 2404 2252 611.3
A 14 95 6939 7.67 2404 2252 611.3
B 2 9 8768 13.9 2417 2309 464.6
B 2 8 7021 10.14 2417 2309 464.6
B 3 17 6465 8.95 2417 2309 464.6
C 3 202 7253 7.67 2496 2323 642.7
C 1 81 7168 7.54 2496 2323 642.7
C 3 203 7038 7.34 2496 2323 642.7
D 10 189 5796 5.9 2284 2072 631.1
D 15 47 5653 5.67 2284 2072 631.1
D 4 16 5631 5.64 2284 2072 631.1

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