ASTROSAT CZTI

Data Quality Report

Orbit 19282

Creation date: 2024-06-27T18:01:01.574923
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_107T01_9000002852_19282cztM0_level2.evt modeM0/AS1A05_107T01_9000002852_19282cztM0_level2_quad_clean.evt
Size (bytes)455,952,960105,382,080
Size434.8 MB 100.5 MB
Events in quadrant A3,203,893679,162
Events in quadrant B3,313,495699,773
Events in quadrant C3,535,268688,133
Events in quadrant D3,312,830669,983

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137423
B0139902
C0145082
D0140662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65181041.595581%
B65181322.025161%
C65182163.313900%
D65191011.549317%

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 8843 6520 0 0 0.00% 0.00%
B 8843 6520 7 7 0.08% 0.11%
C 8843 6519 11 11 0.12% 0.17%
D 8844 6520 3 3 0.03% 0.05%

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 5 16 23249 135.46 824 808 165.7
A 13 254 9111 50.12 824 808 165.7
A 0 226 6944 37.04 824 808 165.7
B 3 64 23409 143.11 829 809 157.9
B 12 111 18647 112.96 829 809 157.9
B 11 111 16645 100.28 829 809 157.9
C 3 233 206087 1092.58 811 819 187.9
C 14 238 124897 660.43 811 819 187.9
C 9 54 44577 232.91 811 819 187.9
D 7 223 75753 375.81 818 794 199.5
D 10 66 68534 339.62 818 794 199.5
D 13 138 50469 249.05 818 794 199.5

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