ASTROSAT CZTI

Data Quality Report

Orbit 20151008_P01_120T01_9000000006_level2

Creation date: 2016-09-06T18:01:04.434739
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/AS1P01_120T01_9000000006cztM0_level2_bc.evt modeM0/AS1P01_120T01_9000000006cztM0_level2_quad_clean.evt
Size (bytes)2,025,973,440329,290,560
Size1.9 GB 314.0 MB
Events in quadrant A12,814,4001,522,236
Events in quadrant B14,408,1191,557,507
Events in quadrant C11,402,7101,539,822
Events in quadrant D18,884,2051,478,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01970
B01970
C01950
D01960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011700
B011680
C011660
D011680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02569550
B02574450
C02333440
D02607220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A564916831.209042%
B564685400.956294%
C56622940.166013%
D5597216332.917530%

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 105552 56823 31 31 0.03% 0.05%
B 105552 56814 64 64 0.06% 0.11%
C 105552 56976 15 15 0.01% 0.03%
D 105552 56330 194 194 0.18% 0.34%

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 86 1161443 2302.4 2459 2417 503.4
A 14 10 764814 1514.5 2459 2417 503.4
A 0 96 135567 264.5 2459 2417 503.4
B 10 199 1714912 3903.7 2531 2458 438.7
B 5 216 670439 1522.73 2531 2458 438.7
B 5 85 303147 685.45 2531 2458 438.7
C 8 31 248895 477.69 2470 2444 515.9
C 0 218 241490 463.33 2470 2444 515.9
C 0 188 197407 377.89 2470 2444 515.9
D 13 222 874417 1619.67 2401 2330 538.4
D 14 53 833253 1543.22 2401 2330 538.4
D 0 243 802402 1485.92 2401 2330 538.4

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