ASTROSAT CZTI

Data Quality Report

Orbit 00716

Creation date: 2024-06-27T14:01:58.728844
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/AS1P01_147T01_9000000106_00716cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00716cztM0_level2_quad_clean.evt
Size (bytes)1,030,337,28070,384,320
Size982.6 MB 67.1 MB
Events in quadrant A7,781,982432,003
Events in quadrant B7,903,021430,060
Events in quadrant C7,466,980414,473
Events in quadrant D7,626,643407,318

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277521
B0280501
C0267923
D0272811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6446470.729134%
B6419360.560835%
C6367240.376944%
D64191502.336813%

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 7011 6447 261 261 3.72% 4.05%
B 7011 6421 240 240 3.42% 3.74%
C 7011 6369 152 152 2.17% 2.39%
D 7011 6421 336 336 4.79% 5.23%

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 15 171 103250 209.9 1990 2000 482.4
A 10 230 38238 75.12 1990 2000 482.4
A 11 79 6845 10.04 1990 2000 482.4
B 0 220 52592 103.97 2042 2053 486.1
B 5 191 39940 77.94 2042 2053 486.1
B 0 207 23523 44.17 2042 2053 486.1
C 15 241 128253 244.43 1845 1915 516.9
C 3 111 32443 59.06 1845 1915 516.9
C 3 79 22025 38.91 1845 1915 516.9
D 9 52 433393 767.03 1809 1876 562.6
D 6 226 149112 261.72 1809 1876 562.6
D 1 4 85195 148.1 1809 1876 562.6

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