ASTROSAT CZTI

Data Quality Report

Orbit 20180913_T02_090T01_9000002364_level2

Creation date: 2018-09-14T11:45:12.666062
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T02_090T01_9000002364cztM0_level2_bc.evt modeM0/AS1T02_090T01_9000002364cztM0_level2_quad_clean.evt
Size (bytes)1,588,792,320649,094,400
Size1.5 GB 619.0 MB
Events in quadrant A10,428,2494,234,626
Events in quadrant B11,459,0404,260,138
Events in quadrant C10,705,5094,117,219
Events in quadrant D12,516,5394,023,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0949250
B0995010
C0968510
D01025150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08980
B08980
C08980
D08980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A440936301.428798%
B440939162.077427%
C440938511.930012%
D4409311302.562765%

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 53724 44089 4 4 0.01% 0.01%
B 53724 44089 13 13 0.02% 0.03%
C 53724 44089 2 2 0.00% 0.00%
D 53724 44088 69 69 0.13% 0.16%

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 15 157 148776 253.44 2597 2542 577.0
A 14 235 99259 167.62 2597 2542 577.0
A 10 253 63555 105.74 2597 2542 577.0
B 7 220 324610 652.78 2610 2562 493.3
B 5 65 294343 591.43 2610 2562 493.3
B 10 245 148850 296.52 2610 2562 493.3
C 3 233 981438 1652.92 2510 2527 592.2
C 0 207 33876 52.93 2510 2527 592.2
C 9 54 22282 33.36 2510 2527 592.2
D 12 218 1994201 3273.82 2558 2470 608.4
D 2 152 211434 343.48 2558 2470 608.4
D 2 234 171342 277.58 2558 2470 608.4

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