ASTROSAT CZTI

Data Quality Report

Orbit 34431

Creation date: 2022-02-10T10:27:05.538183
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_082T10_9000004916_34431cztM0_level2.evt modeM0/AS1A05_082T10_9000004916_34431cztM0_level2_quad_clean.evt
Size (bytes)756,728,640100,920,960
Size721.7 MB 96.2 MB
Events in quadrant A4,416,331608,169
Events in quadrant B5,858,167609,164
Events in quadrant C5,011,906609,098
Events in quadrant D6,994,597576,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192233
B0234932
C0206642
D0273612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9412180.191245%
B94124254.515512%
C9412100.106247%
D94123904.143646%

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 22924 9414 1 1 0.00% 0.01%
B 22924 9414 312 312 1.36% 3.31%
C 22924 9414 3 3 0.01% 0.03%
D 22924 9414 287 287 1.25% 3.05%

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 7 16 77952 346.71 1106 1084 221.7
A 10 83 41853 183.89 1106 1084 221.7
A 13 6 17880 75.76 1106 1084 221.7
B 5 172 1159115 5586.02 1074 1043 207.3
B 0 190 245022 1176.85 1074 1043 207.3
B 4 232 83752 398.95 1074 1043 207.3
C 15 214 388022 1564.67 1069 1080 247.3
C 14 67 294826 1187.81 1069 1080 247.3
C 4 254 53864 213.44 1069 1080 247.3
D 8 195 1159621 4448.33 1056 1026 260.5
D 7 80 505895 1938.4 1056 1026 260.5
D 2 250 417891 1600.52 1056 1026 260.5

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