ASTROSAT CZTI

Data Quality Report

Orbit 20200530_A09_027T01_9000003694_level2

Creation date: 2021-01-11T00:07:28.580492
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/AS1A09_027T01_9000003694cztM0_level2_bc.evt modeM0/AS1A09_027T01_9000003694cztM0_level2_quad_clean.evt
Size (bytes)3,943,572,480906,200,640
Size3.7 GB 864.2 MB
Events in quadrant A13,172,4166,568,980
Events in quadrant B14,781,9656,572,076
Events in quadrant C20,922,1696,139,160
Events in quadrant D66,577,7974,152,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01225740
B01296690
C01545010
D03647690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011900
B011900
C011900
D011900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A583835040.863265%
B583839431.615196%
C5838337976.503606%
D583833108153.236387%

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 69408 58383 1 1 0.00% 0.00%
B 69408 58384 26 26 0.04% 0.04%
C 69408 58376 435 435 0.63% 0.75%
D 69408 58272 5424 5424 7.81% 9.31%

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 411054 582.03 3246 3194 700.8
A 3 1 148922 207.96 3246 3194 700.8
A 13 254 92568 127.54 3246 3194 700.8
B 3 64 849809 1396.96 3234 3167 606.1
B 0 229 438169 717.75 3234 3167 606.1
B 15 33 361745 591.65 3234 3167 606.1
C 0 239 5881747 8255.63 3019 3023 712.1
C 7 247 1191729 1669.33 3019 3023 712.1
C 2 16 1157606 1621.41 3019 3023 712.1
D 1 239 37417757 69094.82 2255 2185 541.5
D 8 195 8142559 15032.72 2255 2185 541.5
D 9 35 7945795 14669.35 2255 2185 541.5

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