ASTROSAT CZTI

Data Quality Report

Orbit 20191120_A07_007T03_9000003320_level2

Creation date: 2019-11-21T10:51:04.632810
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/AS1A07_007T03_9000003320cztM0_level2_bc.evt modeM0/AS1A07_007T03_9000003320cztM0_level2_quad_clean.evt
Size (bytes)926,049,600374,667,840
Size883.1 MB 357.3 MB
Events in quadrant A5,668,9152,453,716
Events in quadrant B5,956,0542,478,932
Events in quadrant C5,612,1862,371,681
Events in quadrant D9,027,1562,252,036

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05300
B05300
C05300
D05300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0544160
B0555070
C0551630
D0654490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A260622070.794260%
B260622230.855652%
C260624111.577009%
D260629023.460978%

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 32037 26060 0 0 0.00% 0.00%
B 32037 26062 1 1 0.00% 0.00%
C 32037 26059 1 1 0.00% 0.00%
D 32037 26061 176 176 0.55% 0.68%

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 13 254 37033 113.4 1459 1437 313.9
A 3 1 21965 65.4 1459 1437 313.9
A 15 174 16463 47.87 1459 1437 313.9
B 3 64 93534 338.49 1470 1438 272.1
B 0 190 70384 253.41 1470 1438 272.1
B 0 228 36598 129.23 1470 1438 272.1
C 1 16 84417 250.32 1410 1407 331.6
C 0 10 67389 198.97 1410 1407 331.6
C 9 54 23874 67.75 1410 1407 331.6
D 1 52 2156846 6581.03 1417 1373 327.5
D 13 249 603838 1839.43 1417 1373 327.5
D 13 172 389459 1184.89 1417 1373 327.5

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