ASTROSAT CZTI

Data Quality Report

Orbit 06761

Creation date: 2024-06-27T15:11:23.374169
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/AS1A02_006T01_9000000934_06761cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06761cztM0_level2_quad_clean.evt
Size (bytes)528,632,64090,218,880
Size504.1 MB 86.0 MB
Events in quadrant A3,062,674582,048
Events in quadrant B3,099,993592,703
Events in quadrant C2,963,996573,958
Events in quadrant D6,421,420509,073

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140133
B0139352
C0138262
D0237812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A680280.117612%
B6802120.176419%
C680230.044105%
D680270010.291091%

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 7907 6803 2 2 0.03% 0.03%
B 7907 6803 1 1 0.01% 0.01%
C 7907 6803 2 2 0.03% 0.03%
D 7907 6803 569 569 7.20% 8.36%

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 14 111 38553 239.92 775 760 157.5
A 8 15 27494 169.71 775 760 157.5
A 13 248 14017 84.16 775 760 157.5
B 0 214 16100 101.61 788 769 150.9
B 12 111 15073 94.8 788 769 150.9
B 11 111 11866 73.55 788 769 150.9
C 12 4 14466 78.08 754 758 175.6
C 13 61 5872 29.13 754 758 175.6
C 14 67 3848 17.6 754 758 175.6
D 12 220 2596170 14791.02 713 690 175.5
D 2 216 580150 3302.2 713 690 175.5
D 2 33 218368 1240.5 713 690 175.5

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