ASTROSAT CZTI

Data Quality Report

Orbit 20200919_T03_233T01_9000003894_level2

Creation date: 2021-01-08T06:09:27.428393
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_233T01_9000003894cztM0_level2_bc.evt modeM0/AS1T03_233T01_9000003894cztM0_level2_quad_clean.evt
Size (bytes)807,370,560182,350,080
Size770.0 MB 173.9 MB
Events in quadrant A2,695,0941,394,141
Events in quadrant B12,133,545712,501
Events in quadrant C2,181,3211,386,342
Events in quadrant D6,676,2151,257,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238001
B0677421
C0227451
D0378421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110971060.955213%
B11097848876.489141%
C110971541.387762%
D11097152713.760476%

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 11531 11095 0 0 0.00% 0.00%
B 11531 10874 1935 1935 16.78% 17.79%
C 11532 11096 2 2 0.02% 0.02%
D 11531 11095 759 759 6.58% 6.84%

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 429915 3460.99 560 550 124.1
A 5 168 88319 707.48 560 550 124.1
A 13 254 17271 134.78 560 550 124.1
B 0 189 7676309 124590.0 302 294 61.6
B 3 64 3127073 50750.99 302 294 61.6
B 10 246 57737 932.35 302 294 61.6
C 2 16 24066 177.97 551 548 132.1
C 15 208 20383 150.1 551 548 132.1
C 8 128 9646 68.85 551 548 132.1
D 7 80 3361043 27384.0 525 506 122.7
D 1 52 926539 7545.96 525 506 122.7
D 2 250 174615 1418.76 525 506 122.7

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