ASTROSAT CZTI

Data Quality Report

Orbit 45914

Creation date: 2024-06-27T23:17:39.201154
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/AS1A13_071T03_9000006142_45914cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45914cztM0_level2_quad_clean.evt
Size (bytes)825,189,120117,262,080
Size787.0 MB 111.8 MB
Events in quadrant A6,634,527803,767
Events in quadrant B7,152,306791,095
Events in quadrant C5,756,441765,718
Events in quadrant D10,406,765651,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243940
B0266421
C0225620
D0363780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7735560.723982%
B77345146.645979%
C77344986.439100%
D7735110814.324499%

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 7735 7735 4 4 0.05% 0.05%
B 7734 7734 353 353 4.56% 4.56%
C 7734 7734 438 438 5.66% 5.66%
D 7735 7735 889 889 11.49% 11.49%

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 10 83 3168116 17733.52 846 826 178.6
A 14 235 168383 938.14 846 826 178.6
A 13 254 13436 70.6 846 826 178.6
B 3 112 3653215 22333.16 826 800 163.5
B 4 158 73187 442.62 826 800 163.5
B 5 172 47168 283.52 826 800 163.5
C 14 254 2461610 12771.61 817 823 192.7
C 5 250 38503 195.56 817 823 192.7
C 12 2 33917 171.76 817 823 192.7
D 11 241 4006498 20174.55 787 761 198.6
D 1 52 2027548 10207.74 787 761 198.6
D 13 249 690493 3473.78 787 761 198.6

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