ASTROSAT CZTI

Data Quality Report

Orbit 30787

Creation date: 2024-06-27T20:19:36.627503
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/AS1A10_071T18_9000004448_30787cztM0_level2.evt modeM0/AS1A10_071T18_9000004448_30787cztM0_level2_quad_clean.evt
Size (bytes)656,210,88074,808,000
Size625.8 MB 71.3 MB
Events in quadrant A3,349,459481,480
Events in quadrant B5,343,093482,360
Events in quadrant C3,746,023443,598
Events in quadrant D7,010,935418,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135622
B0199512
C0148692
D0251812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6285260.413683%
B62851372.179793%
C62851742.768496%
D62853505.568815%

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 7560 6285 0 0 0.00% 0.00%
B 7560 6285 44 44 0.58% 0.70%
C 7560 6285 68 68 0.90% 1.08%
D 7560 6285 513 513 6.79% 8.16%

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 13 254 11590 62.32 868 854 172.3
A 3 137 8082 41.96 868 854 172.3
A 0 226 7391 37.95 868 854 172.3
B 6 159 1724208 10598.85 862 843 162.6
B 10 247 194369 1190.2 862 843 162.6
B 12 111 19181 112.78 862 843 162.6
C 0 10 247141 1320.15 807 813 186.6
C 3 233 196137 1046.81 807 813 186.6
C 14 238 133397 710.56 807 813 186.6
D 8 195 3779136 18117.97 795 781 208.5
D 13 249 108932 518.61 795 781 208.5
D 2 250 50973 240.68 795 781 208.5

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