ASTROSAT CZTI

Data Quality Report

Orbit 20160218_T01_051T01_9000000332_level2

Creation date: 2016-09-06T17:53:35.577891
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/AS1T01_051T01_9000000332cztM0_level2_bc.evt modeM0/AS1T01_051T01_9000000332cztM0_level2_quad_clean.evt
Size (bytes)607,576,320318,790,080
Size579.4 MB 304.0 MB
Events in quadrant A4,947,6932,072,771
Events in quadrant B4,143,0662,079,135
Events in quadrant C3,760,3832,068,461
Events in quadrant D4,154,4042,033,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452290
B0421220
C0416650
D0427260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B140
C140
D110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A203644071.998625%
B203641020.500884%
C20364950.466510%
D203641660.815164%

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 23175 20365 137 137 0.59% 0.67%
B 23175 20365 0 0 0.00% 0.00%
C 23175 20365 0 0 0.00% 0.00%
D 23175 20365 11 11 0.05% 0.05%

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 14 5 744333 3802.74 914 894 195.5
A 0 231 524078 2676.12 914 894 195.5
A 0 199 124810 633.84 914 894 195.5
B 0 234 250642 1487.58 929 900 167.9
B 5 68 112061 662.13 929 900 167.9
B 0 198 100262 591.85 929 900 167.9
C 5 234 89256 458.29 905 887 192.8
C 10 82 33869 171.05 905 887 192.8
C 12 4 23347 116.48 905 887 192.8
D 2 31 271132 1362.67 902 874 198.3
D 13 88 145127 727.34 902 874 198.3
D 9 64 80068 399.31 902 874 198.3

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