ASTROSAT CZTI

Data Quality Report

Orbit 31691

Creation date: 2024-06-27T20:31:36.392549
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_103T09_9000004630_31691cztM0_level2.evt modeM0/AS1A10_103T09_9000004630_31691cztM0_level2_quad_clean.evt
Size (bytes)710,110,08085,636,800
Size677.2 MB 81.7 MB
Events in quadrant A3,551,870534,827
Events in quadrant B5,780,267534,442
Events in quadrant C7,159,937499,800
Events in quadrant D4,510,298504,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01555415
B02284147
C026579113
D01826433

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7460851.139410%
B74511842.469467%
C744375610.157195%
D74522112.831455%

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 7639 7466 0 0 0.00% 0.00%
B 7639 7464 4 4 0.05% 0.05%
C 7639 7469 141 141 1.85% 1.89%
D 7639 7465 103 103 1.35% 1.38%

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 0 13 48354 259.73 900 879 182.8
A 13 6 16216 83.91 900 879 182.8
A 13 254 14368 73.8 900 879 182.8
B 6 159 2088538 12090.02 892 870 172.7
B 0 229 46658 265.17 892 870 172.7
B 4 80 35188 198.74 892 870 172.7
C 3 233 3655680 18300.5 843 847 199.7
C 14 238 132268 658.05 843 847 199.7
C 0 10 48886 240.54 843 847 199.7
D 8 195 510122 2419.3 866 842 210.5
D 13 249 233612 1105.76 866 842 210.5
D 12 227 227919 1078.72 866 842 210.5

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