ASTROSAT CZTI

Data Quality Report

Orbit 20201210_A10_045T04_9000004066_level2

Creation date: 2025-12-18T16:39:51.326170
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/AS1A10_045T04_9000004066cztM0_level2.fits modeM0/AS1A10_045T04_9000004066cztM0_level2_quad_clean.evt
Size (bytes)1,491,312,9601,162,716,480
Size1.4 GB 1.1 GB
Events in quadrant A9,346,1046,632,214
Events in quadrant B8,904,8526,629,662
Events in quadrant C9,070,3986,295,349
Events in quadrant D7,413,5705,231,396

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160320
B03434030
C03240260
D05112880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02210
B02220
C02220
D02220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030940
B030940
C030940
D030940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15212319451.278571%
B15212238872.555186%
C15212232542.139073%
D1521221825011.996950%

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 198856 152111 0 0 0.00% 0.00%
B 198856 152098 0 0 0.00% 0.00%
C 198856 152106 0 0 0.00% 0.00%
D 198856 151653 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 0 29 7648 9.09 2433 2283 590.0
A 7 110 7554 8.93 2433 2283 590.0
A 9 19 6813 7.68 2433 2283 590.0
B 2 9 7261 10.96 2353 2240 458.3
B 2 8 5985 8.17 2353 2240 458.3
B 3 17 5945 8.08 2353 2240 458.3
C 12 241 6335 6.77 2395 2235 605.2
C 9 209 6189 6.53 2395 2235 605.2
C 3 187 6007 6.23 2395 2235 605.2
D 6 231 5138 5.77 2116 1927 556.2
D 15 47 5136 5.77 2116 1927 556.2
D 7 3 5130 5.76 2116 1927 556.2

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