ASTROSAT CZTI

Data Quality Report

Orbit 20180306_T02_012T01_9000001946_level2

Creation date: 2018-07-06T10:22:30.167345
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/AS1T02_012T01_9000001946cztM0_level2_bc.evt modeM0/AS1T02_012T01_9000001946cztM0_level2_quad_clean.evt
Size (bytes)200,183,04056,350,080
Size190.9 MB 53.7 MB
Events in quadrant A1,815,167355,798
Events in quadrant B1,525,544347,950
Events in quadrant C778,660363,736
Events in quadrant D1,648,899342,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124020
B0113330
C085850
D0116930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41992225.286973%
B41993688.763991%
C4199350.833532%
D41992475.882353%

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 4750 4200 12 12 0.25% 0.29%
B 4750 4198 78 78 1.64% 1.86%
C 4750 4200 0 0 0.00% 0.00%
D 4750 4199 21 21 0.44% 0.50%

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 12 189 885930 18903.04 198 193 46.9
A 12 173 69121 1471.03 198 193 46.9
A 0 23 42559 904.16 198 193 46.9
B 4 239 619494 15189.07 196 190 40.8
B 3 64 49458 1208.35 196 190 40.8
B 0 189 42223 1030.9 196 190 40.8
C 13 61 1220 21.99 198 195 46.6
C 8 222 1179 21.11 198 195 46.6
C 14 234 822 13.45 198 195 46.6
D 1 52 598230 12790.67 195 187 46.8
D 13 122 100639 2148.42 195 187 46.8
D 5 222 68391 1458.72 195 187 46.8

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