ASTROSAT CZTI

Data Quality Report

Orbit 12558

Creation date: 2024-06-27T16:29:10.718230
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/AS1A04_201T03_9000001862_12558cztM0_level2.evt modeM0/AS1A04_201T03_9000001862_12558cztM0_level2_quad_clean.evt
Size (bytes)626,636,16095,725,440
Size597.6 MB 91.3 MB
Events in quadrant A4,069,531578,701
Events in quadrant B5,051,816587,394
Events in quadrant C3,857,073583,255
Events in quadrant D5,418,746554,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177501
B0205621
C0174601
D0216901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85591421.659072%
B85593934.591658%
C85591111.296880%
D85592673.119523%

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 8880 8560 10 10 0.11% 0.12%
B 8880 8560 230 230 2.59% 2.69%
C 8880 8560 1 1 0.01% 0.01%
D 8880 8560 154 154 1.73% 1.80%

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 13 248 93822 449.12 1004 980 206.7
A 1 162 39156 184.68 1004 980 206.7
A 1 178 22327 103.27 1004 980 206.7
B 4 239 976997 5082.91 991 967 192.0
B 0 230 95896 494.37 991 967 192.0
B 0 85 22568 112.49 991 967 192.0
C 14 234 12406 49.4 985 987 231.2
C 13 61 7209 26.92 985 987 231.2
C 9 221 4191 13.86 985 987 231.2
D 1 52 1084034 4602.98 968 937 235.3
D 11 176 426452 1808.37 968 937 235.3
D 13 249 51076 213.08 968 937 235.3

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