ASTROSAT CZTI

Data Quality Report

Orbit 20191101_T03_145T01_9000003278_level2

Creation date: 2019-11-06T18:19:36.002398
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/AS1T03_145T01_9000003278cztM0_level2_bc.evt modeM0/AS1T03_145T01_9000003278cztM0_level2_quad_clean.evt
Size (bytes)6,985,543,6802,560,415,040
Size6.5 GB 2.4 GB
Events in quadrant A41,172,31416,520,899
Events in quadrant B43,934,32316,762,871
Events in quadrant C41,041,01716,025,077
Events in quadrant D72,366,74515,124,311

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03991800
B04087180
C04070670
D05214950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038980
B038980
C038980
D038980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03330
C03330
D03330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19156920311.060192%
B19156828451.485112%
C19156833101.727846%
D191567132846.934388%

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 235152 191579 3 3 0.00% 0.00%
B 235151 191575 64 64 0.03% 0.03%
C 235151 191580 17 17 0.01% 0.01%
D 235151 191565 2304 2304 0.98% 1.20%

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 309085 132.07 10597 10440 2261.3
A 5 16 137964 56.39 10597 10440 2261.3
A 3 1 116551 46.92 10597 10440 2261.3
B 3 64 1307234 657.26 10714 10481 1973.0
B 10 246 681338 340.03 10714 10481 1973.0
B 0 197 288129 140.73 10714 10481 1973.0
C 10 22 918879 381.82 10236 10230 2379.8
C 9 54 548640 226.24 10236 10230 2379.8
C 3 9 144663 56.49 10236 10230 2379.8
D 1 52 26031130 11232.65 10129 9813 2316.6
D 11 176 1517697 650.91 10129 9813 2316.6
D 2 133 1353577 580.06 10129 9813 2316.6

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