ASTROSAT CZTI

Data Quality Report

Orbit 20161110_G06_024T01_9000000780_level2

Creation date: 2017-09-19T00:10:36.423716
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/AS1G06_024T01_9000000780cztM0_level2.evt modeM0/AS1G06_024T01_9000000780cztM0_level2_quad_clean.evt
Size (bytes)1,900,281,600275,506,560
Size1.8 GB 262.7 MB
Events in quadrant A13,420,0061,613,827
Events in quadrant B15,491,8011,617,163
Events in quadrant C12,461,7711,624,706
Events in quadrant D14,274,1231,556,016

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587230
B0649170
C0580100
D0621100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05740
B05840
C05840
D05840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A280954401.566115%
B2784810443.748923%
C282083921.389677%
D280275541.976665%

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 47804 29905 0 0 0.00% 0.00%
B 47804 29640 351 351 0.73% 1.18%
C 47804 29957 0 0 0.00% 0.00%
D 47804 29818 88 88 0.18% 0.30%

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 8 15 804985 1199.66 3259 3180 668.4
A 13 251 31220 41.95 3259 3180 668.4
A 0 226 31110 41.79 3259 3180 668.4
B 3 64 2446351 3924.41 3237 3160 622.6
B 15 204 286559 455.21 3237 3160 622.6
B 0 219 69255 106.17 3237 3160 622.6
C 13 61 25253 29.94 3175 3194 736.7
C 9 16 18548 20.84 3175 3194 736.7
C 8 128 18243 20.43 3175 3194 736.7
D 12 221 753890 956.44 3158 3055 785.0
D 2 63 452243 572.19 3158 3055 785.0
D 11 241 345064 435.66 3158 3055 785.0

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