ASTROSAT CZTI

Data Quality Report

Orbit 25020

Creation date: 2024-06-27T19:12:49.494591
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_027T16_9000003666_25020cztM0_level2.evt modeM0/AS1A07_027T16_9000003666_25020cztM0_level2_quad_clean.evt
Size (bytes)941,785,920156,798,720
Size898.2 MB 149.5 MB
Events in quadrant A5,703,543994,482
Events in quadrant B5,778,9441,011,608
Events in quadrant C7,890,732937,741
Events in quadrant D8,316,154953,508

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249972
B0251372
C0309932
D0326302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12315690.560292%
B12316940.763235%
C123165654.587528%
D123163092.508931%

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 13520 12317 1 1 0.01% 0.01%
B 13521 12318 1 1 0.01% 0.01%
C 13521 12318 265 265 1.96% 2.15%
D 13521 12318 240 240 1.78% 1.95%

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 6 16 31097 100.13 1471 1436 296.2
A 13 254 15416 47.19 1471 1436 296.2
A 3 137 13619 41.13 1471 1436 296.2
B 0 190 44471 153.4 1457 1420 280.7
B 12 111 34703 118.59 1457 1420 280.7
B 11 111 31323 106.55 1457 1420 280.7
C 7 247 2177743 6709.7 1388 1394 324.4
C 14 238 217983 667.75 1388 1394 324.4
C 2 16 38301 113.78 1388 1394 324.4
D 7 238 2285401 6619.32 1429 1388 345.1
D 1 52 307581 887.38 1429 1388 345.1
D 8 195 255165 735.47 1429 1388 345.1

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