ASTROSAT CZTI

Data Quality Report

Orbit 20190707_A05_140T01_9000003016_level2

Creation date: 2019-07-09T18:16:05.987407
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_140T01_9000003016cztM0_level2_bc.evt modeM0/AS1A05_140T01_9000003016cztM0_level2_quad_clean.evt
Size (bytes)2,633,685,1201,071,397,440
Size2.5 GB 1021.8 MB
Events in quadrant A17,326,7356,938,776
Events in quadrant B18,589,6836,948,503
Events in quadrant C16,382,3426,654,079
Events in quadrant D22,110,6536,528,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016000
B016000
C016000
D016000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01636070
B01684970
C01631260
D01802750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A785208231.048141%
B7852011081.411105%
C7852011941.520632%
D7852016832.143403%

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 91676 78521 1 1 0.00% 0.00%
B 91676 78519 4 4 0.00% 0.01%
C 91676 78518 0 0 0.00% 0.00%
D 91676 78519 237 237 0.26% 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 12 16 333202 347.38 4373 4315 946.8
A 12 194 76927 76.69 4373 4315 946.8
A 13 254 62971 61.95 4373 4315 946.8
B 10 245 737154 887.74 4383 4294 825.5
B 0 189 408879 490.09 4383 4294 825.5
B 4 216 198923 235.76 4383 4294 825.5
C 7 220 129178 128.37 4171 4166 973.9
C 3 233 102047 100.51 4171 4166 973.9
C 0 207 43064 39.94 4171 4166 973.9
D 1 52 2837572 2877.59 4261 4133 984.7
D 13 153 1063189 1075.56 4261 4133 984.7
D 2 16 1007096 1018.59 4261 4133 984.7

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