ASTROSAT CZTI

Data Quality Report

Orbit 20151114_P01_141T01_9000000104_level2

Creation date: 2016-09-06T17:58:58.709804
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_141T01_9000000104cztM0_level2_bc.evt modeM0/AS1P01_141T01_9000000104cztM0_level2_quad_clean.evt
Size (bytes)1,449,429,120397,808,640
Size1.3 GB 379.4 MB
Events in quadrant A6,984,3042,461,177
Events in quadrant B10,221,5062,496,698
Events in quadrant C13,537,5922,434,939
Events in quadrant D10,846,2772,330,311

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06940
B06940
C06940
D06940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01452140
B01577500
C01593540
D01456680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A338492770.818340%
B338492450.723803%
C338491060.313155%
D338484161.229024%

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 41639 33849 10 10 0.02% 0.03%
B 41639 33849 20 20 0.05% 0.06%
C 41639 33849 1 1 0.00% 0.00%
D 41639 33849 80 80 0.19% 0.24%

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 15 171 722313 2160.0 1605 1576 333.7
A 13 8 24038 67.32 1605 1576 333.7
A 15 69 22738 63.42 1605 1576 333.7
B 5 247 2630050 9057.99 1650 1610 290.2
B 5 191 438924 1507.05 1650 1610 290.2
B 7 221 173212 591.37 1650 1610 290.2
C 3 31 1578828 4787.51 1581 1565 329.5
C 3 15 1311890 3977.27 1581 1565 329.5
C 3 95 1297128 3932.46 1581 1565 329.5
D 0 25 1663890 4909.09 1555 1512 338.6
D 6 226 1256574 3706.26 1555 1512 338.6
D 1 4 487314 1434.6 1555 1512 338.6

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