ASTROSAT CZTI

Data Quality Report

Orbit 20170814_A03_133T01_9000001464_level2

Creation date: 2017-10-30T13:57:51.871984
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/AS1A03_133T01_9000001464cztM0_level2.evt modeM0/AS1A03_133T01_9000001464cztM0_level2_quad_clean.evt
Size (bytes)6,564,908,1601,213,130,880
Size6.1 GB 1.1 GB
Events in quadrant A43,446,6307,771,543
Events in quadrant B46,345,3617,779,204
Events in quadrant C40,724,9887,721,962
Events in quadrant D62,206,0997,273,540

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01902840
B01974230
C01852060
D02442890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018360
B018340
C018340
D018360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A904798840.977022%
B9045710551.166300%
C904774710.520574%
D9047721792.408347%

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 125734 90587 163 163 0.13% 0.18%
B 125734 90590 152 152 0.12% 0.17%
C 125734 90591 7 7 0.01% 0.01%
D 125734 90579 1490 1490 1.19% 1.64%

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 15 223 595609 269.62 10768 10559 2169.9
A 15 174 580648 262.72 10768 10559 2169.9
A 8 15 355570 159.0 10768 10559 2169.9
B 4 239 992472 485.19 10775 10546 2023.8
B 0 214 783175 381.77 10775 10546 2023.8
B 0 219 595334 288.96 10775 10546 2023.8
C 14 67 121476 46.6 10387 10457 2382.5
C 13 61 78397 28.52 10387 10457 2382.5
C 14 234 57364 19.69 10387 10457 2382.5
D 1 52 11706594 4775.3 10270 9997 2449.4
D 8 195 4861684 1980.77 10270 9997 2449.4
D 7 71 1420658 575.92 10270 9997 2449.4

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