ASTROSAT CZTI

Data Quality Report

Orbit 20230621_A12_087T01_9000005702_level2

Creation date: 2023-06-24T14:16:01.389290
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/AS1A12_087T01_9000005702cztM0_level2.fits modeM0/AS1A12_087T01_9000005702cztM0_level2_quad_clean.evt
Size (bytes)379,359,360342,141,120
Size361.8 MB 326.3 MB
Events in quadrant A2,300,3921,959,056
Events in quadrant B2,193,2021,975,617
Events in quadrant C2,192,9281,841,073
Events in quadrant D1,908,8021,692,340

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0956200
B0857300
C0964190
D01074810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08620
B08620
C08620
D08620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01670
C01670
D01670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A421291880.446248%
B42129760.180398%
C4212814153.358811%
D4212919974.740203%

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 63157 42119 0 0 0.00% 0.00%
B 63156 42119 0 0 0.00% 0.00%
C 63156 41937 0 0 0.00% 0.00%
D 63156 41594 0 0 0.00% 0.00%

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 29 1913 8.94 600 562 151.1
A 7 110 1894 8.81 600 562 151.1
A 9 19 1818 8.31 600 562 151.1
B 2 9 1960 12.33 580 554 114.1
B 3 80 1603 9.2 580 554 114.1
B 2 8 1573 8.93 580 554 114.1
C 1 81 1813 8.5 579 541 149.7
C 1 80 1737 7.99 579 541 149.7
C 1 65 1529 6.6 579 541 149.7
D 10 189 1430 6.39 545 497 146.0
D 7 3 1405 6.22 545 497 146.0
D 4 160 1397 6.16 545 497 146.0

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