ASTROSAT CZTI

Data Quality Report

Orbit 20200213_A07_046T01_9000003498_level2

Creation date: 2020-02-14T12:27:55.734883
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/AS1A07_046T01_9000003498cztM0_level2_bc.evt modeM0/AS1A07_046T01_9000003498cztM0_level2_quad_clean.evt
Size (bytes)651,349,440255,726,720
Size621.2 MB 243.9 MB
Events in quadrant A3,733,0881,653,501
Events in quadrant B4,014,1291,700,269
Events in quadrant C3,844,0271,628,907
Events in quadrant D6,937,6491,558,207

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0368440
B0380190
C0377970
D0483840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174761540.881209%
B174762191.253147%
C174762911.665141%
D1747510796.174535%

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 39463 17474 0 0 0.00% 0.00%
B 39463 17473 2 2 0.01% 0.01%
C 39463 17474 0 0 0.00% 0.00%
D 39463 17473 287 287 0.73% 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 13 254 28454 131.01 966 946 210.0
A 0 226 6158 24.82 966 946 210.0
A 12 194 5974 23.94 966 946 210.0
B 0 230 79624 421.55 987 962 186.6
B 0 189 45699 239.74 987 962 186.6
B 0 228 24101 124.0 987 962 186.6
C 7 247 148735 665.76 945 940 222.0
C 10 9 19535 83.76 945 940 222.0
C 0 10 16144 68.49 945 940 222.0
D 1 52 2539194 11752.93 934 901 216.0
D 12 233 429872 1986.24 934 901 216.0
D 12 235 133336 613.21 934 901 216.0

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