ASTROSAT CZTI

Data Quality Report

Orbit 20210130_A10_064T01_9000004144_level2

Creation date: 2021-02-03T11:48:56.868787
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/AS1A10_064T01_9000004144cztM0_level2_bc.evt modeM0/AS1A10_064T01_9000004144cztM0_level2_quad_clean.evt
Size (bytes)8,915,601,6001,490,290,560
Size8.3 GB 1.4 GB
Events in quadrant A25,272,8819,986,546
Events in quadrant B25,632,55010,191,083
Events in quadrant C86,048,3549,045,870
Events in quadrant D125,180,6647,933,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02423770
B02443770
C04448150
D05561940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023680
B023680
C023680
D023680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11627510480.901312%
B11627515051.294345%
C1162751471812.657923%
D1162753877133.344227%

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 137619 116263 17 17 0.01% 0.01%
B 137619 116260 67 67 0.05% 0.06%
C 137619 116260 1352 1352 0.98% 1.16%
D 137619 116259 26797 26797 19.47% 23.05%

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 6 16 546739 398.75 6350 6253 1355.4
A 13 254 191817 136.9 6350 6253 1355.4
A 13 6 111269 77.48 6350 6253 1355.4
B 0 229 315280 253.43 6441 6284 1219.3
B 10 245 273594 219.24 6441 6284 1219.3
B 15 33 150941 118.64 6441 6284 1219.3
C 3 233 62645635 44680.54 5905 5889 1401.9
C 15 208 236918 164.79 5905 5889 1401.9
C 2 114 219974 152.71 5905 5889 1401.9
D 8 195 86392009 68279.75 5520 5347 1265.2
D 1 52 15052494 11893.22 5520 5347 1265.2
D 13 104 1778421 1401.43 5520 5347 1265.2

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