ASTROSAT CZTI

Data Quality Report

Orbit 20201215_A10_045T09_9000004072_level2

Creation date: 2021-01-06T21:27:41.626518
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/AS1A10_045T09_9000004072cztM0_level2_bc.evt modeM0/AS1A10_045T09_9000004072cztM0_level2_quad_clean.evt
Size (bytes)5,472,213,1201,804,400,640
Size5.1 GB 1.7 GB
Events in quadrant A29,432,48011,572,803
Events in quadrant B30,612,56311,806,875
Events in quadrant C29,196,97711,208,836
Events in quadrant D67,222,21610,738,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02855660
B02903010
C02891060
D04097400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027780
B027760
C027740
D027760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13613715021.103300%
B13612521911.609550%
C13612926001.909953%
D13611675575.551882%

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 156945 136236 4 4 0.00% 0.00%
B 156945 136218 43 43 0.03% 0.03%
C 156945 136211 16 16 0.01% 0.01%
D 156945 136216 2133 2133 1.36% 1.57%

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 972075 615.81 7256 7133 1566.9
A 12 194 194341 119.47 7256 7133 1566.9
A 13 254 187972 115.41 7256 7133 1566.9
B 10 245 1821101 1317.74 7325 7141 1376.6
B 0 230 260445 184.01 7325 7141 1376.6
B 0 183 213793 150.12 7325 7141 1376.6
C 3 233 1448718 881.58 6969 6934 1635.5
C 15 208 403351 242.39 6969 6934 1635.5
C 9 221 163287 95.6 6969 6934 1635.5
D 1 52 31250862 19535.99 6957 6730 1599.3
D 8 195 2985262 1862.38 6957 6730 1599.3
D 5 222 2202953 1373.23 6957 6730 1599.3

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