ASTROSAT CZTI

Data Quality Report

Orbit 18666

Creation date: 2024-06-27T17:53:09.943184
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/AS1A06_005T01_9000002788_18666cztM0_level2.evt modeM0/AS1A06_005T01_9000002788_18666cztM0_level2_quad_clean.evt
Size (bytes)1,414,077,120165,974,400
Size1.3 GB 158.3 MB
Events in quadrant A6,575,6521,160,512
Events in quadrant B6,693,6171,178,727
Events in quadrant C6,698,1451,130,354
Events in quadrant D21,915,790590,184

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286634
B0287483
C0288633
D0744553

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13974910.651209%
B139751521.087657%
C139751951.395349%
D13975586541.967800%

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 15989 13977 5 5 0.03% 0.04%
B 15990 13976 14 14 0.09% 0.10%
C 15990 13976 19 19 0.12% 0.14%
D 15990 13976 5693 5693 35.60% 40.73%

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 108244 319.87 1663 1628 333.3
A 15 192 36164 103.62 1663 1628 333.3
A 11 29 22428 62.4 1663 1628 333.3
B 4 80 60413 186.69 1666 1625 314.9
B 12 111 39234 119.43 1666 1625 314.9
B 11 111 34441 104.21 1666 1625 314.9
C 14 238 248404 659.23 1603 1615 374.4
C 9 54 103361 271.79 1603 1615 374.4
C 3 233 73007 190.7 1603 1615 374.4
D 7 238 17224639 61203.3 1165 1131 281.4
D 1 52 259241 917.19 1165 1131 281.4
D 2 234 39963 137.99 1165 1131 281.4

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