ASTROSAT CZTI

Data Quality Report

Orbit 20190807_A05_160T01_9000003078_level2

Creation date: 2019-09-29T01:08:28.262122
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/AS1A05_160T01_9000003078cztM0_level2_bc.evt modeM0/AS1A05_160T01_9000003078cztM0_level2_quad_clean.evt
Size (bytes)5,573,589,1201,292,077,440
Size5.2 GB 1.2 GB
Events in quadrant A22,526,4778,431,710
Events in quadrant B23,964,2108,602,710
Events in quadrant C21,925,0937,940,090
Events in quadrant D93,372,0497,085,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01870
C01870
D01870

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02154660
B02197160
C02168150
D04414520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021020
B021080
C021100
D019980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10330612331.193542%
B10329916171.565359%
C10330619201.858556%
D1031441824617.689832%

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 122146 103458 0 0 0.00% 0.00%
B 122145 103452 24 24 0.02% 0.02%
C 122145 103477 4 4 0.00% 0.00%
D 122145 103289 10132 10132 8.30% 9.81%

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 5 203 57068 40.99 5855 5753 1251.8
A 0 226 37278 25.18 5855 5753 1251.8
A 12 194 36681 24.71 5855 5753 1251.8
B 0 189 413727 370.94 5910 5771 1099.8
B 0 229 254242 225.93 5910 5771 1099.8
B 0 219 194791 171.87 5910 5771 1099.8
C 3 233 304072 235.76 5490 5473 1266.5
C 9 54 220692 169.93 5490 5473 1266.5
C 0 10 217247 167.21 5490 5473 1266.5
D 1 52 35130482 29473.38 5265 5107 1191.8
D 1 239 23738485 19914.46 5265 5107 1191.8
D 1 20 9283286 7785.24 5265 5107 1191.8

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