ASTROSAT CZTI

Data Quality Report

Orbit 32787

Creation date: 2024-06-27T20:42:00.601283
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/AS1T04_064T01_9000004730_32787cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32787cztM0_level2_quad_clean.evt
Size (bytes)832,432,32063,342,720
Size793.9 MB 60.4 MB
Events in quadrant A4,081,942428,155
Events in quadrant B3,293,055472,880
Events in quadrant C7,660,524334,440
Events in quadrant D9,844,140335,088

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151253
B0128452
C0260032
D0326512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49224909.955303%
B49221012.052011%
C4922216844.047135%
D4922277156.298253%

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 7045 4923 337 337 4.78% 6.85%
B 7045 4923 56 56 0.79% 1.14%
C 7045 4922 2003 2003 28.43% 40.69%
D 7045 4923 2705 2705 38.40% 54.95%

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 15 237 1477176 11487.8 641 631 128.5
A 14 238 50965 391.61 641 631 128.5
A 9 191 13146 97.37 641 631 128.5
B 5 172 323953 2622.2 663 651 123.3
B 0 219 254799 2061.31 663 651 123.3
B 5 200 36271 288.9 663 651 123.3
C 0 10 5156150 43078.96 523 530 119.7
C 3 233 388227 3239.49 523 530 119.7
C 4 254 25223 206.33 523 530 119.7
D 8 195 5582969 38278.68 560 549 145.8
D 12 227 542841 3718.5 560 549 145.8
D 2 250 523961 3589.04 560 549 145.8

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