ASTROSAT CZTI

Data Quality Report

Orbit 07497

Creation date: 2024-06-27T15:20:30.419680
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/AS1T01_156T01_9000001034_07497cztM0_level2.evt modeM0/AS1T01_156T01_9000001034_07497cztM0_level2_quad_clean.evt
Size (bytes)2,753,985,600480,651,840
Size2.6 GB 458.4 MB
Events in quadrant A19,195,0752,981,307
Events in quadrant B20,501,4133,032,049
Events in quadrant C18,815,6492,998,412
Events in quadrant D22,211,2622,818,485

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08100
B08100
C08100
D08100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0821758
B0854587
C0816707
D0921047

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A397293400.855798%
B397294061.021924%
C397292780.699741%
D397298682.184802%

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 47289 39734 3 3 0.01% 0.01%
B 47289 39735 18 18 0.04% 0.05%
C 47289 39735 3 3 0.01% 0.01%
D 47289 39734 517 517 1.09% 1.30%

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 15 239 65428 61.13 4933 4840 991.2
A 0 23 58915 54.56 4933 4840 991.2
A 0 226 50804 46.37 4933 4840 991.2
B 0 214 748398 803.01 4957 4857 925.9
B 0 219 175292 184.07 4957 4857 925.9
B 12 111 88309 90.13 4957 4857 925.9
C 1 16 38641 30.73 4797 4839 1100.0
C 13 61 36811 29.07 4797 4839 1100.0
C 12 4 25671 18.94 4797 4839 1100.0
D 1 52 1532951 1311.81 4786 4646 1165.0
D 2 152 745217 635.67 4786 4646 1165.0
D 2 136 486677 413.75 4786 4646 1165.0

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