ASTROSAT CZTI

Data Quality Report

Orbit 20210725_A10_048T04_9000004586_level2

Creation date: 2021-07-30T12:43:54.700497
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_048T04_9000004586cztM0_level2_bc.evt modeM0/AS1A10_048T04_9000004586cztM0_level2_quad_clean.evt
Size (bytes)373,728,96090,483,840
Size356.4 MB 86.3 MB
Events in quadrant A1,902,876577,021
Events in quadrant B3,870,332579,159
Events in quadrant C1,993,307541,852
Events in quadrant D3,044,850530,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162760
B0229820
C0170910
D0197730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01480
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7374851.152699%
B73611562.119277%
C73662994.059191%
D73461011.374898%

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 10452 7409 1 1 0.01% 0.01%
B 10452 7401 0 0 0.00% 0.00%
C 10452 7402 4 4 0.04% 0.05%
D 10452 7388 5 5 0.05% 0.07%

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 13 79815 793.01 473 465 100.1
A 13 254 12339 118.67 473 465 100.1
A 0 226 3018 25.51 473 465 100.1
B 6 159 1914362 21495.2 476 467 89.0
B 4 80 51542 573.63 476 467 89.0
B 0 230 21858 240.25 476 467 89.0
C 0 10 229037 2233.66 437 437 102.3
C 12 249 30596 294.68 437 437 102.3
C 14 225 26267 252.39 437 437 102.3
D 8 195 1117762 11229.25 447 434 99.5
D 2 250 101469 1015.41 447 434 99.5
D 12 79 46269 460.65 447 434 99.5

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