ASTROSAT CZTI

Data Quality Report

Orbit 20783

Creation date: 2024-06-27T18:19:32.726166
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/AS1A05_013T01_9000003070_20783cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20783cztM0_level2_quad_clean.evt
Size (bytes)1,243,503,360215,899,200
Size1.2 GB 205.9 MB
Events in quadrant A7,487,0691,432,789
Events in quadrant B8,624,8681,412,024
Events in quadrant C7,650,8741,393,787
Events in quadrant D12,864,6161,245,017

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032816
B032814
C032814
D032717

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336181535
B0375232133
C0340231521
D0525914074

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A153321140.743543%
B153123292.148642%
C153572331.517223%
D1512612808.462250%

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 19375 15591 0 0 0.00% 0.00%
B 19373 15538 132 132 0.68% 0.85%
C 19375 15613 4 4 0.02% 0.03%
D 19376 15320 965 965 4.98% 6.30%

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 15 174 18862 43.93 1943 1906 386.0
A 0 226 16954 38.98 1943 1906 386.0
A 3 137 15294 34.68 1943 1906 386.0
B 7 220 537096 1520.56 1906 1860 352.0
B 3 64 183738 516.7 1906 1860 352.0
B 0 219 180755 508.23 1906 1860 352.0
C 14 238 296541 691.45 1866 1882 426.1
C 7 247 36561 81.38 1866 1882 426.1
C 3 233 25044 54.35 1866 1882 426.1
D 1 20 2193606 5156.55 1791 1746 425.1
D 1 239 1654606 3888.5 1791 1746 425.1
D 1 52 1600246 3760.62 1791 1746 425.1

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