ASTROSAT CZTI

Data Quality Report

Orbit 20190410_T03_098T01_9000002836_level2

Creation date: 2019-04-12T11:23:02.769658
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/AS1T03_098T01_9000002836cztM0_level2_bc.evt modeM0/AS1T03_098T01_9000002836cztM0_level2_quad_clean.evt
Size (bytes)4,813,079,0401,563,341,760
Size4.5 GB 1.5 GB
Events in quadrant A24,231,5599,911,535
Events in quadrant B30,112,90410,071,424
Events in quadrant C25,840,6889,857,880
Events in quadrant D57,452,1619,330,593

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01690
B01690
C01690
D01690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02468750
B02690830
C02555230
D03650210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024280
B024280
C024280
D024280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11938414581.221269%
B11938431092.604202%
C11938422491.883837%
D119384103418.661965%

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 136240 119386 0 0 0.00% 0.00%
B 136240 119385 145 145 0.11% 0.12%
C 136240 119381 21 21 0.02% 0.02%
D 136240 119376 2105 2105 1.55% 1.76%

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 8 192 170094 121.48 6180 6075 1350.2
A 4 2 118151 83.01 6180 6075 1350.2
A 13 254 106967 74.72 6180 6075 1350.2
B 10 245 2135302 1817.77 6236 6080 1171.3
B 3 112 958882 813.43 6236 6080 1171.3
B 4 216 749333 634.53 6236 6080 1171.3
C 3 233 2080369 1456.95 6037 6007 1423.8
C 0 207 409871 283.66 6037 6007 1423.8
C 7 220 68658 44.0 6037 6007 1423.8
D 7 238 11514336 8245.91 5928 5721 1395.7
D 1 52 10360918 7419.49 5928 5721 1395.7
D 11 176 6655194 4764.34 5928 5721 1395.7

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