ASTROSAT CZTI

Data Quality Report

Orbit 14426

Creation date: 2024-06-27T16:55:01.109470
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/AS1G08_025T01_9000002130_14426cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14426cztM0_level2_quad_clean.evt
Size (bytes)596,744,64088,179,840
Size569.1 MB 84.1 MB
Events in quadrant A3,225,694578,397
Events in quadrant B4,317,276551,379
Events in quadrant C5,192,128545,926
Events in quadrant D4,906,355550,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137762
B0173261
C0198761
D0190501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6367310.486886%
B63673735.858332%
C63673034.758913%
D63674416.926339%

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 7443 6368 1 1 0.01% 0.02%
B 7443 6368 230 230 3.09% 3.61%
C 7443 6368 210 210 2.82% 3.30%
D 7443 6368 168 168 2.26% 2.64%

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 12 189 119781 747.61 785 767 159.2
A 8 15 77123 479.65 785 767 159.2
A 0 226 7198 40.39 785 767 159.2
B 0 182 785728 5368.07 766 748 146.2
B 15 222 236905 1614.96 766 748 146.2
B 0 219 44811 301.32 766 748 146.2
C 3 233 2261454 13105.27 749 754 172.5
C 0 207 6592 33.84 749 754 172.5
C 13 61 5494 27.48 749 754 172.5
D 13 122 1450881 7817.2 733 715 185.5
D 15 0 172562 926.35 733 715 185.5
D 2 120 164797 884.49 733 715 185.5

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