ASTROSAT CZTI

Data Quality Report

Orbit 20210531_A10_094T80_9000004424_level2

Creation date: 2021-06-01T12:01:14.726006
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_094T80_9000004424cztM0_level2_bc.evt modeM0/AS1A10_094T80_9000004424cztM0_level2_quad_clean.evt
Size (bytes)1,636,084,800491,031,360
Size1.5 GB 468.3 MB
Events in quadrant A6,205,1793,480,919
Events in quadrant B12,077,7603,418,437
Events in quadrant C6,402,0153,322,094
Events in quadrant D23,259,2063,025,956

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04800
B04800
C04800
D04800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0527900
B0730490
C0543030
D01096850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A236275302.243196%
B236277433.144707%
C236277173.034664%
D23627409217.319169%

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 28947 23629 13 13 0.04% 0.06%
B 28947 23628 0 0 0.00% 0.00%
C 28947 23627 0 0 0.00% 0.00%
D 28947 23626 1583 1583 5.47% 6.70%

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 0 13 661267 2201.71 1400 1385 299.7
A 15 174 88069 289.22 1400 1385 299.7
A 8 192 44870 145.09 1400 1385 299.7
B 6 159 6294453 24276.67 1375 1349 259.2
B 4 81 318438 1223.22 1375 1349 259.2
B 0 190 85802 325.79 1375 1349 259.2
C 3 233 1030785 3275.39 1327 1331 314.3
C 0 10 134208 422.77 1327 1331 314.3
C 10 22 62022 193.1 1327 1331 314.3
D 8 195 11499852 39243.97 1293 1265 293.0
D 12 227 1923786 6561.45 1293 1265 293.0
D 1 52 1648859 5623.14 1293 1265 293.0

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