ASTROSAT CZTI

Data Quality Report

Orbit 13671

Creation date: 2024-06-27T16:44:19.066813
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/AS1G08_070T01_9000002028_13671cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13671cztM0_level2_quad_clean.evt
Size (bytes)977,405,760173,136,960
Size932.1 MB 165.1 MB
Events in quadrant A6,470,1401,099,046
Events in quadrant B7,265,2471,177,467
Events in quadrant C6,774,9151,046,592
Events in quadrant D8,175,753986,572

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278524
B0299653
C0280283
D0329023

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135251320.975970%
B135252351.737523%
C13525830.613678%
D135252832.092421%

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 15001 13529 1 1 0.01% 0.01%
B 15001 13529 25 25 0.17% 0.18%
C 15001 13529 1 1 0.01% 0.01%
D 15001 13529 132 132 0.88% 0.98%

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 15 69 24472 66.96 1667 1628 341.1
A 1 162 19408 52.12 1667 1628 341.1
A 0 226 14630 38.11 1667 1628 341.1
B 0 219 319411 995.39 1684 1653 319.2
B 3 64 102459 315.78 1684 1653 319.2
B 4 142 60799 185.28 1684 1653 319.2
C 3 233 522883 1405.16 1599 1607 371.0
C 14 234 14149 33.81 1599 1607 371.0
C 13 61 11583 26.89 1599 1607 371.0
D 5 222 590937 1530.15 1582 1535 385.2
D 1 52 450834 1166.43 1582 1535 385.2
D 13 122 404464 1046.05 1582 1535 385.2

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